pointer is missing a nullability type specifier when building @@com_github_google_quiche//:quic_core_connection_alarms_lib on Envoy

[barroca]

I'm getting error building the library in Envoy:

 @@com_github_google_quiche//:quic_core_connection_alarms_lib which I believe the source i
ERROR: /external/com_github_google_quiche/BUILD.bazel:2317:22: Compiling quiche/quic/core/quic_connection_alarms.cc failed: (Exit 1): cc_wrapper.sh failed: error executing CppCompile command (from target @@com_github_google_quiche//:quic_core_connection_alarms_lib) external/local_config_cc/cc_wrapper.sh -U_FORTIFY_SOURCE -fstack-protector -Wall -Wthread-safety -Wself-assign -Wunused-but-set-parameter -Wno-free-nonheap-object -fcolor-diagnostics ... (remaining 203 arguments skipped)

Use --sandbox_debug to see verbose messages from the sandbox and retain the sandbox build root for debugging
In file included from external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.cc:5:
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:41:32: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
   41 |   virtual QuicConnectionContext* context() = 0;
      |                                ^
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:41:32: note: insert '_Nullable' if the pointer may be null
   41 |   virtual QuicConnectionContext* context() = 0;
      |                                ^
      |                                  _Nullable
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:41:32: note: insert '_Nonnull' if the pointer should never be null
   41 |   virtual QuicConnectionContext* context() = 0;
      |                                ^
      |                                  _Nonnull
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:129:31: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
  129 |   QuicConnectionAlarmsDelegate* delegate() { return connection_; }
      |                               ^
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:129:31: note: insert '_Nullable' if the pointer may be null
  129 |   QuicConnectionAlarmsDelegate* delegate() { return connection_; }
      |                               ^
      |                                 _Nullable
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:129:31: note: insert '_Nonnull' if the pointer should never be null
  129 |   QuicConnectionAlarmsDelegate* delegate() { return connection_; }
      |                               ^
      |                                 _Nonnull
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:168:31: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
  168 |   QuicConnectionAlarmsDelegate* connection_;
      |                               ^
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:168:31: note: insert '_Nullable' if the pointer may be null
  168 |   QuicConnectionAlarmsDelegate* connection_;
      |                               ^
      |                                 _Nullable
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:168:31: note: insert '_Nonnull' if the pointer should never be null
  168 |   QuicConnectionAlarmsDelegate* connection_;
      |                               ^
      |                                 _Nonnull
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:184:38: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
  184 |   QuicAlarmProxy(QuicAlarmMultiplexer* multiplexer, QuicAlarmSlot slot)
      |                                      ^
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:184:38: note: insert '_Nullable' if the pointer may be null
  184 |   QuicAlarmProxy(QuicAlarmMultiplexer* multiplexer, QuicAlarmSlot slot)
      |                                      ^
      |                                        _Nullable
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:184:38: note: insert '_Nonnull' if the pointer should never be null
  184 |   QuicAlarmProxy(QuicAlarmMultiplexer* multiplexer, QuicAlarmSlot slot)
      |                                      ^
      |                                        _Nonnull
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:204:23: error: pointer is missing a nullability type specifier (_Nonnull, _Nullable, or _Null_unspecified) [-Werror,-Wnullability-completeness]
  204 |   QuicAlarmMultiplexer* multiplexer_;
      |                       ^
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:204:23: note: insert '_Nullable' if the pointer may be null
  204 |   QuicAlarmMultiplexer* multiplexer_;
      |                       ^
      |                         _Nullable
external/com_github_google_quiche/quiche/quic/core/quic_connection_alarms.h:204:23: note: insert '_Nonnull' if the pointer should never be null
  204 |   QuicAlarmMultiplexer* multiplexer_;
      |                       ^
      |                         _Nonnull
5 errors generated.
Target //test/extensions/filters/http/on_demand:on_demand_filter_test failed to build

Here is a try to fix https://github.com/google/quiche/pull/94/files