Format all tests.

tests/language_strong/label6_negative_test.dart

Index: tests/language_strong/label6_negative_test.dart
diff --git a/tests/language_strong/label6_negative_test.dart b/tests/language_strong/label6_negative_test.dart
index 21e345da8abfec1aa61222910505c33a9a8d1883..eee60ab2a79db1103083517889d9d81e6c41a18a 100644
--- a/tests/language_strong/label6_negative_test.dart
+++ b/tests/language_strong/label6_negative_test.dart
@@ -3,21 +3,21 @@
 // BSD-style license that can be found in the LICENSE file.
 // Dart test program to test check that we catch label errors.
 
-
 class Label6NegativeTest {
   static testMain() {
-    L: while (false) {
+    L:
+    while (false) {
       break; //    ok;
       break L; //  ok
       void innerfunc() {
         if (true) break L; // Illegal: jump target is outside of function
       }
+
       innerfunc();
     }
   }
 }
 
-
 main() {
   Label6NegativeTest.testMain();
 }