Remove designated initialized for c++17

Author: stevenfontanella

src/parser/wast-parser.cpp

@@ -497,8 +497,7 @@ MaybeResult<ModuleInstantiation> instantiation(Lexer& in) {
     return in.err("expected end of module instantiation");
   }
 
-  return ModuleInstantiation{.moduleName = *moduleId,
-                             .instanceName = *instanceId};
+  return ModuleInstantiation{*moduleId, *instanceId};
 }
 
 using ModuleOrInstantiation = std::variant<ModuleInstantiation, WASTModule>;

src/tools/wasm-shell.cpp

@@ -190,7 +190,6 @@ struct Shell {
 
     // We copy pointers as a registered module's name might still be used
     // in an assertion or invoke command.
-
     modules[reg.name] = modules[lastModule];
 
     interfaces[reg.name] = interfaces[instanceName];