Report separate UNUSED_CATCH_CLAUSE and UNUSED_CATCH_STACK hints.

pkg/analysis_server/test/services/correction/fix_test.dart

Index: pkg/analysis_server/test/services/correction/fix_test.dart
diff --git a/pkg/analysis_server/test/services/correction/fix_test.dart b/pkg/analysis_server/test/services/correction/fix_test.dart
index 9a493c70abe1bee63c9ed0dc0169c1af4b1f6290..ec60d939a3837eb3dd6abfe104ef4ac1e5531f34 100644
--- a/pkg/analysis_server/test/services/correction/fix_test.dart
+++ b/pkg/analysis_server/test/services/correction/fix_test.dart
@@ -3441,7 +3441,9 @@ main() {
   AnalysisError _findErrorToFix() {
     List<AnalysisError> errors = context.computeErrors(testSource);
     errors.removeWhere((error) {
-      return error.errorCode == HintCode.UNUSED_ELEMENT ||
+      return error.errorCode == HintCode.UNUSED_CATCH_CLAUSE ||
+          error.errorCode == HintCode.UNUSED_CATCH_STACK ||
+          error.errorCode == HintCode.UNUSED_ELEMENT ||
           error.errorCode == HintCode.UNUSED_FIELD ||
           error.errorCode == HintCode.UNUSED_LOCAL_VARIABLE;
     });