Fix warnings_checker.dart handling of multitests

tests/language/optional_named_parameters_test.dart

Index: tests/language/optional_named_parameters_test.dart
diff --git a/tests/language/optional_named_parameters_test.dart b/tests/language/optional_named_parameters_test.dart
index 94e56426cd4d64feee851e1a64d55f1d4cd114de..002b5391f5c0607786eb3b41d114136e0a380b05 100644
--- a/tests/language/optional_named_parameters_test.dart
+++ b/tests/language/optional_named_parameters_test.dart
@@ -64,28 +64,28 @@ class OptionalNamedParametersTest {
     Expect.equals(10, np.f22(10));
     Expect.equals(20, F10());
     Expect.equals(20, np.f21());
-    Expect.equals(20, F10(20)); // /// 01: runtime error
-    Expect.equals(20, np.f21(20)); // /// 02: runtime error
+    Expect.equals(20, F10(20)); // //# 01: runtime error
+    Expect.equals(20, np.f21(20)); // //# 02: runtime error
     Expect.equals(20, F10(b:20));
     Expect.equals(20, np.f21(b:20));
     Expect.equals(1020, F21(10));
     Expect.equals(1020, np.f32(10));
-    Expect.equals(1025, F21(10, 25)); // /// 03: runtime error
-    Expect.equals(1025, np.f32(10, 25)); // /// 04: runtime error
+    Expect.equals(1025, F21(10, 25)); // //# 03: runtime error
+    Expect.equals(1025, np.f32(10, 25)); // //# 04: runtime error
     Expect.equals(1025, F21(10, b:25));
     Expect.equals(1025, np.f32(10, b:25));
     Expect.equals(102030, F31(10));
     Expect.equals(102030, np.f42(10));
-    Expect.equals(102530, F31(10, 25)); // /// 05: runtime error
-    Expect.equals(102530, np.f42(10, 25)); // /// 06: runtime error
+    Expect.equals(102530, F31(10, 25)); // //# 05: runtime error
+    Expect.equals(102530, np.f42(10, 25)); // //# 06: runtime error
     Expect.equals(102530, F31(10, b:25));
     Expect.equals(102530, np.f42(10, b:25));
     Expect.equals(102035, F31(10, c:35));
     Expect.equals(102035, np.f42(10, c:35));
     Expect.equals(102535, F31(10, b:25, c:35));
     Expect.equals(102535, np.f42(10, b:25, c:35));
-    Expect.equals(102535, F31(10, 25, c:35)); // /// 07: runtime error
-    Expect.equals(102535, np.f42(10, 25, c:35)); // /// 08: runtime error
+    Expect.equals(102535, F31(10, 25, c:35)); // //# 07: runtime error
+    Expect.equals(102535, np.f42(10, 25, c:35)); // //# 08: runtime error
     Expect.equals(102535, F31(10, c:35, b:25));
     Expect.equals(102535, np.f42(10, c:35, b:25));
     Expect.equals(10200040, F41(10));
@@ -93,7 +93,7 @@ class OptionalNamedParametersTest {
     Expect.equals(10203540, F41(10, c:35));
     Expect.equals(10203540, np.f52(10, c:35));
     Expect.equals(10250045, F41(10, d:45, b:25));
-    Expect.equals(10250045, F41(10, 25, d:45)); // /// 09: runtime error
+    Expect.equals(10250045, F41(10, 25, d:45)); // //# 09: runtime error
     Expect.equals(10250045, np.f52(10, d:45, b:25));
     Expect.equals(10253545, F41(10, d:45, c:35, b:25));
     Expect.equals(10253545, np.f52(10, d:45, c:35, b:25));