Fix labeled break statements.

tests/compiler/dart2js/kernel/loops_test.dart

Index: tests/compiler/dart2js/kernel/loops_test.dart
diff --git a/tests/compiler/dart2js/kernel/loops_test.dart b/tests/compiler/dart2js/kernel/loops_test.dart
index 78385c797ceb65ee4fe273dd418c2d515d41e0f6..b257e4b009e922c2b621e38207ad25acf53948af 100644
--- a/tests/compiler/dart2js/kernel/loops_test.dart
+++ b/tests/compiler/dart2js/kernel/loops_test.dart
@@ -84,4 +84,21 @@ main() {
 }''';
     return check(code, disableTypeInference: false);
   });
+
+  test('for loop with break to label', () {
+    String code = '''
+var a = 0;
+main() {
+  var sum = 0;
+  outer: for (a in [1, 2, 3]) {
+    for (int i = 0; i < 10; i++) {
+      sum += a;
+      if (a + i < 5)
+        break outer;
+    }
+  }
+  return sum;
+}''';
+    return check(code, disableTypeInference: false);
+  });
 }