Move spaces from before comments to within comments

tests/language_strong/mixin_forwarding_constructor4_test.dart

Index: tests/language_strong/mixin_forwarding_constructor4_test.dart
diff --git a/tests/language_strong/mixin_forwarding_constructor4_test.dart b/tests/language_strong/mixin_forwarding_constructor4_test.dart
index 5230a10a9ccb89542540c86065481b5f127044aa..6bf23ae4fa7eb6d26bf190182e0ae05493fa1b93 100644
--- a/tests/language_strong/mixin_forwarding_constructor4_test.dart
+++ b/tests/language_strong/mixin_forwarding_constructor4_test.dart
@@ -10,14 +10,14 @@ abstract class Mixin {}
 
 class Base {
   Base(
-      {x}        /// 01: compile-time error
-      {x}        /// 02: compile-time error
-      {x}        /// 03: compile-time error
+      {x} //       /// 01: compile-time error
+      {x} //       /// 02: compile-time error
+      {x} //       /// 03: compile-time error
     );
 }
 
 class C extends Base with Mixin {
-  C();           /// 02: continued
+  C(); //          /// 02: continued
   C() : super(); /// 03: continued
 }