Fix warnings_checker.dart handling of multitests

tests/language/call_non_method_field_test.dart

Index: tests/language/call_non_method_field_test.dart
diff --git a/tests/language/call_non_method_field_test.dart b/tests/language/call_non_method_field_test.dart
index fdc1fe3da9af6dcf5dae19134834bee0a6f604ab..a8b2e8e505860cc475ef0f30db56ba69a1c4aa26 100644
--- a/tests/language/call_non_method_field_test.dart
+++ b/tests/language/call_non_method_field_test.dart
@@ -14,10 +14,10 @@ class Hest extends Fisk {
 main() {
   Fisk x1 = new Fisk();
   if (false) {
-    x1.i(); // /// 01: static type warning
+    x1.i(); // //# 01: static type warning
   }
   Hest x2 = new Hest();
   if (false) {
-    x2.i(); // /// 02: static type warning
+    x2.i(); // //# 02: static type warning
   }
 }