Fix warnings_checker.dart handling of multitests

tests/language/issue_25671a_test.dart

Index: tests/language/issue_25671a_test.dart
diff --git a/tests/language/issue_25671a_test.dart b/tests/language/issue_25671a_test.dart
index 602466e281e0d7f4558da368ab683392308ec28a..00b0dd7a0902243373432f17cbea9ee6f679aad2 100644
--- a/tests/language/issue_25671a_test.dart
+++ b/tests/language/issue_25671a_test.dart
@@ -5,17 +5,17 @@
 import 'package:expect/expect.dart';
 
 class A {
-  noSuchMethod() { //                                   /// 01: static type warning
-    throw new Exception( //                             /// 01: continued
-        "Wrong noSuchMethod() should not be called"); /// 01: continued
-  } //                                                  /// 01: continued
+  noSuchMethod() { //                                   //# 01: static type warning
+    throw new Exception( //                             //# 01: continued
+        "Wrong noSuchMethod() should not be called"); //# 01: continued
+  } //                                                  //# 01: continued
 }
 class C extends A {
   test() {
-    super.v = 1; /// 01: continued
+    super.v = 1; //# 01: continued
   }
 }
 main() {
   C c = new C();
-  Expect.throws(() => c.test(), (e) => e is NoSuchMethodError); /// 01: continued
+  Expect.throws(() => c.test(), (e) => e is NoSuchMethodError); //# 01: continued
 }