Update src/bun.js/bindings/CatchScope.zig

Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>

Author: pfgithub

src/bun.js/bindings/CatchScope.zig

@@ -146,9 +146,9 @@ pub fn clearException(self: *CatchScope) void {
 }
 
 pub fn tryTakeException(self: *CatchScope) ?*jsc.Exception {
-    if (self.exception() != null) {
+    if (self.exception()) |exception| {
         self.clearException();
-        return self.exception();
+        return exception;
     }
     return null;
 }