Fix warnings_checker.dart handling of multitests

tests/language/generic_function_typedef2_test.dart

Index: tests/language/generic_function_typedef2_test.dart
diff --git a/tests/language/generic_function_typedef2_test.dart b/tests/language/generic_function_typedef2_test.dart
index 5dab10d9efe623f3f963e4e0ddc129979e2e72a1..d0fac0c4d19fdabf42b283c5209c7442fab5ef91 100644
--- a/tests/language/generic_function_typedef2_test.dart
+++ b/tests/language/generic_function_typedef2_test.dart
@@ -9,33 +9,33 @@ class A {}
 
 typedef int F();
 
-typedef G = F; /// 00: compile-time error
-typedef H = int; /// 01: compile-time error
-typedef I = A; /// 02: compile-time error
-typedef J = List<int>; /// 03: compile-time error
+typedef G = F; //# 00: compile-time error
+typedef H = int; //# 01: compile-time error
+typedef I = A; //# 02: compile-time error
+typedef J = List<int>; //# 03: compile-time error
 typedef K = Function(Function<A>(A
-    <int> // /// 04: static type warning
+    <int> // //# 04: static type warning
     ));
 typedef L = Function({
-  /* //  /// 05: compile-time error
+  /* //  //# 05: compile-time error
   bool
-  */ //  /// 05: compile-time error
+  */ //  //# 05: compile-time error
   x});
 
 typedef M = Function({
-  /* //  /// 06: compile-time error
+  /* //  //# 06: compile-time error
   bool
-  */ //  /// 06: compile-time error
+  */ //  //# 06: compile-time error
   int});
 
 foo({bool int}) {}
 main() {
   bool b = true;
-  Expect.isFalse(b is G); // /// 00: continued
-  Expect.isFalse(b is H); // /// 01: continued
-  Expect.isFalse(b is I); // /// 02: continued
-  Expect.isFalse(b is J); // /// 03: continued
-  Expect.isFalse(b is K); // /// 04: continued
+  Expect.isFalse(b is G); // //# 00: continued
+  Expect.isFalse(b is H); // //# 01: continued
+  Expect.isFalse(b is I); // //# 02: continued
+  Expect.isFalse(b is J); // //# 03: continued
+  Expect.isFalse(b is K); // //# 04: continued
   Expect.isFalse(b is L);
   Expect.isFalse(b is M);
   Expect.isTrue(foo is M);