Filter out calls to local functions whose signature does not apply.

tests/compiler/dart2js_extra/21724_test.dart

Index: tests/compiler/dart2js_extra/21724_test.dart
diff --git a/pkg/docgen/test/multi_library_code/lib/test_lib2_foo.dart b/tests/compiler/dart2js_extra/21724_test.dart
similarity index 66%
copy from pkg/docgen/test/multi_library_code/lib/test_lib2_foo.dart
copy to tests/compiler/dart2js_extra/21724_test.dart
index 1b3d037c5bce3add4829e93b527bc5eb7f01f821..a578ca69c55cab3f93bdd3d4300c86c294c1c6fc 100644
--- a/pkg/docgen/test/multi_library_code/lib/test_lib2_foo.dart
+++ b/tests/compiler/dart2js_extra/21724_test.dart
@@ -2,14 +2,13 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library test_lib2_foo;
 
-export 'test_lib2_bar.dart';
-
-class Foo {
-
-}
+// Regression test for issue 21724 - invalid call to local closure
 
 main() {
-  print('hello world');
+  foo(x) {}
+  try {
+    foo();
+  } catch (_) {}
 }
+