Fix warnings_checker.dart handling of multitests

tests/language_strong/is_malformed_type_test.dart

Index: tests/language_strong/is_malformed_type_test.dart
diff --git a/tests/language_strong/is_malformed_type_test.dart b/tests/language_strong/is_malformed_type_test.dart
index 99c8efa1adc4f39cba4a0c8703848c56c3aca8f1..6c85bbac4fdee7551eb379eb116b60910ec3bdb0 100644
--- a/tests/language_strong/is_malformed_type_test.dart
+++ b/tests/language_strong/is_malformed_type_test.dart
@@ -12,7 +12,7 @@ test99(e) {
   // Test that a runtime error is thrown when the 'is' operator checks for a
   // malformed type.
   try {
-    if (e is Undefined) Expect.fail("unreachable"); //  /// 99: continued
+    if (e is Undefined) Expect.fail("unreachable"); //  //# 99: continued
     Expect.fail("unreachable");
   } catch(exc) {
     Expect.isTrue(exc is TypeError);
@@ -23,7 +23,7 @@ test98(e) {
   // Test that a runtime error is thrown when the 'as' operator checks for a
   // malformed type.
   try {
-    if (e as Undefined) Expect.fail("unreachable"); //  /// 98: continued
+    if (e as Undefined) Expect.fail("unreachable"); //  //# 98: continued
     Expect.fail("unreachable");
   } catch(exc) {
     Expect.isTrue(exc is TypeError);
@@ -36,7 +36,7 @@ test97(e) {
     // with malformed type is parsed, but not executed at runtime.
     // Regression test for issue 16985.
     evalCount = 0;
-    if (e is Undefined && testEval(e)) Expect.fail("unreachable"); //  /// 97: continued
+    if (e is Undefined && testEval(e)) Expect.fail("unreachable"); //  //# 97: continued
     Expect.fail("unreachable");
   } catch(exc) {
     Expect.isTrue(exc is TypeError);
@@ -50,7 +50,7 @@ test96(e) {
     // with malformed type is parsed, but not executed at runtime.
     // Regression test for issue 16985.
     evalCount = 0;
-    if (e as Undefined && testEval(e)) Expect.fail("unreachable"); //  /// 96: continued
+    if (e as Undefined && testEval(e)) Expect.fail("unreachable"); //  //# 96: continued
     Expect.fail("unreachable");
   } catch(exc) {
     Expect.isTrue(exc is TypeError);
@@ -63,7 +63,7 @@ test95(e) {
   // runtime error is thrown.
   try {
     evalCount = 0;
-    if (testEval(e) is Undefined) Expect.fail("unreachable"); //  /// 95: continued
+    if (testEval(e) is Undefined) Expect.fail("unreachable"); //  //# 95: continued
     Expect.fail("unreachable");
   } catch(exc) {
     Expect.isTrue(exc is TypeError);
@@ -76,7 +76,7 @@ test94(e) {
   // runtime error is thrown.
   try {
     evalCount = 0;
-    if (testEval(e) as Undefined) Expect.fail("unreachable"); // /// 94: continued
+    if (testEval(e) as Undefined) Expect.fail("unreachable"); // //# 94: continued
     Expect.fail("unreachable");
   } catch(exc) {
     Expect.isTrue(exc is TypeError);
@@ -85,10 +85,10 @@ test94(e) {
 }
 
 main() {
-  test99("99 bottles"); /// 99: static type warning
-  test98("98 bottles"); /// 98: static type warning
-  test97("97 bottles"); /// 97: static type warning
-  test96("96 bottles"); /// 96: static type warning
-  test95("95 bottles"); /// 95: static type warning
-  test94("94 bottles"); /// 94: static type warning
+  test99("99 bottles"); //# 99: static type warning
+  test98("98 bottles"); //# 98: static type warning
+  test97("97 bottles"); //# 97: static type warning
+  test96("96 bottles"); //# 96: static type warning
+  test95("95 bottles"); //# 95: static type warning
+  test94("94 bottles"); //# 94: static type warning
 }