Fix warnings_checker.dart handling of multitests

tests/language/type_parameter_test.dart

Index: tests/language/type_parameter_test.dart
diff --git a/tests/language/type_parameter_test.dart b/tests/language/type_parameter_test.dart
index eb39d1bdf1994051c8e674c7b6a38fe5959b5f9d..1b91d0a8e4466bac6423a5028fd20b369759444a 100644
--- a/tests/language/type_parameter_test.dart
+++ b/tests/language/type_parameter_test.dart
@@ -17,28 +17,28 @@ class A<T> {
   }
 
   static
-  T /// 01: static type warning, dynamic type error
+  T //# 01: static type warning, dynamic type error
   staticMethod(
-  T /// 02: static type warning, dynamic type error
+  T //# 02: static type warning, dynamic type error
   a) {
     final
-    T /// 03: static type warning, dynamic type error
+    T //# 03: static type warning, dynamic type error
     a = "not_null";
     print(a);
     return a;
   }
 
   static final
-  T /// 04: static type warning, dynamic type error
+  T //# 04: static type warning, dynamic type error
   staticFinalField = "not_null";
 
   static const
-  T /// 05: static type warning, checked mode compile-time error
+  T //# 05: static type warning, checked mode compile-time error
   staticConstField = "not_null";
 
   static not_null() => "not_null";
   static final
-  T /// 06: static type warning, dynamic type error
+  T //# 06: static type warning, dynamic type error
   staticFinalField2 = not_null();
 
   // Assigning null to a malformed type is not a dynamic error.