Fix warnings_checker.dart handling of multitests

tests/language/static_getter_no_setter2_test.dart

Index: tests/language/static_getter_no_setter2_test.dart
diff --git a/tests/language/static_getter_no_setter2_test.dart b/tests/language/static_getter_no_setter2_test.dart
index 508f175bead5b50dd71d27c51be39aa35fae2d7d..2bbfe624130f73f408555a026cbf58d5161dc03e 100644
--- a/tests/language/static_getter_no_setter2_test.dart
+++ b/tests/language/static_getter_no_setter2_test.dart
@@ -9,11 +9,11 @@ class Class {
 
   method() {
     try {
-      getter++; /// 01: static type warning
+      getter++; //# 01: static type warning
     } on NoSuchMethodError catch(e) {
       return;
     }
-    Expect.fail('Expected NoSuchMethodError'); /// 01: continued
+    Expect.fail('Expected NoSuchMethodError'); //# 01: continued
   }
 
   noSuchMethod(i) {
@@ -23,7 +23,7 @@ class Class {
 
 class Subclass extends Class {
   method() {
-    print(getter); /// 01: continued
+    print(getter); //# 01: continued
     super.method();
   }
 }