Fix warnings_checker.dart handling of multitests

tests/language_strong/generic_methods_overriding_test.dart

Index: tests/language_strong/generic_methods_overriding_test.dart
diff --git a/tests/language_strong/generic_methods_overriding_test.dart b/tests/language_strong/generic_methods_overriding_test.dart
index 2de07fc2576d3628043e40e6acdb545afb1850eb..2ef1def02b8ed3a576e83a9b29729e81f3537953 100644
--- a/tests/language_strong/generic_methods_overriding_test.dart
+++ b/tests/language_strong/generic_methods_overriding_test.dart
@@ -20,13 +20,13 @@ class C {
 }
 
 class D extends C {
-  String fun<T extends X>(T t) => "D"; /// 01: compile-time error
-  String fun<T extends Y>(T t) => "D"; /// 02: ok
+  String fun<T extends X>(T t) => "D"; //# 01: compile-time error
+  String fun<T extends Y>(T t) => "D"; //# 02: ok
 }
 
 class E extends C {
-  String fun<T>(Y y) => "E"; /// 03: compile-time error
-  String fun<T extends Y>(Y y) => "E"; /// 04: ok
+  String fun<T>(Y y) => "E"; //# 03: compile-time error
+  String fun<T extends Y>(Y y) => "E"; //# 04: ok
 }
 
 class F extends C {
@@ -36,8 +36,8 @@ class F extends C {
 
   String fun<T extends Y>(T t) {
     if (t is Z) {
-      return this.foobar(t as Z); /// 05: ok
-      return this.foobar(t); /// 06: ok
+      return this.foobar(t as Z); //# 05: ok
+      return this.foobar(t); //# 06: ok
     }
     return "FY";
   }
@@ -53,10 +53,10 @@ main() {
   F f = new F();
 
   Expect.equals(c.fun<Y>(y), "C");
-  Expect.equals(d.fun<Y>(y), "D"); /// 02: continued
-  Expect.equals(e.fun<Y>(y), "E"); /// 04: continued
-  Expect.equals(f.fun<Y>(y), "FY"); /// 05: continued
-  Expect.equals(f.fun<Z>(z), "FZ"); /// 05: continued
-  Expect.equals(f.fun<Y>(y), "FY"); /// 06: continued
-  Expect.equals(f.fun<Z>(z), "FZ"); /// 06: continued
+  Expect.equals(d.fun<Y>(y), "D"); //# 02: continued
+  Expect.equals(e.fun<Y>(y), "E"); //# 04: continued
+  Expect.equals(f.fun<Y>(y), "FY"); //# 05: continued
+  Expect.equals(f.fun<Z>(z), "FZ"); //# 05: continued
+  Expect.equals(f.fun<Y>(y), "FY"); //# 06: continued
+  Expect.equals(f.fun<Z>(z), "FZ"); //# 06: continued
 }