Fix warnings_checker.dart handling of multitests

tests/language_strong/identical_const_test.dart

Index: tests/language_strong/identical_const_test.dart
diff --git a/tests/language_strong/identical_const_test.dart b/tests/language_strong/identical_const_test.dart
index cd96244823b2811750cb1426f888b30d3a69a576..17324f33de618a3ee9219252029eb3b938cc3a52 100644
--- a/tests/language_strong/identical_const_test.dart
+++ b/tests/language_strong/identical_const_test.dart
@@ -14,13 +14,13 @@ const identical_gg = identical(g, g);
 
 // Verify proper compile time computation of identical()
 const a = const {
-  identical_ff: 0, /// 01: static type warning
-  identical_gg: 0, /// 02: static type warning
+  identical_ff: 0, //# 01: static type warning
+  identical_gg: 0, //# 02: static type warning
   true: 0 };
 
 const b = const {
-  identical_fg: 0, /// 03: static type warning
-  identical_gf: 0, /// 04: static type warning
+  identical_fg: 0, //# 03: static type warning
+  identical_gf: 0, //# 04: static type warning
   false: 0 };
 
 use(x) => x;
@@ -30,8 +30,8 @@ main() {
   use(b);
 
   // Verify proper run time computation of identical()
-  Expect.isTrue(identical_ff); /// 05: ok
-  Expect.isTrue(identical_gg); /// 06: ok
-  Expect.isFalse(identical_fg); /// 07: ok
-  Expect.isFalse(identical_gf); /// 08: ok
+  Expect.isTrue(identical_ff); //# 05: ok
+  Expect.isTrue(identical_gg); //# 06: ok
+  Expect.isFalse(identical_fg); //# 07: ok
+  Expect.isFalse(identical_gf); //# 08: ok
 }