Move spaces from before comments to within comments

tests/language/constructor6_test.dart

Index: tests/language/constructor6_test.dart
diff --git a/tests/language/constructor6_test.dart b/tests/language/constructor6_test.dart
index 2f6c991ae7700949b60b46bd13015ce4431ba7ab..04dd004010095a597d7a7f317f840268e95418c7 100644
--- a/tests/language/constructor6_test.dart
+++ b/tests/language/constructor6_test.dart
@@ -24,7 +24,7 @@ class A {
     // statements.
     var r1 = f();
     E(arg += 100);  // If this is the same arg as closed by f, ...
-    var r2 = f();   // .. the effect of +=100 will be seen here.
+    var r2 = f(); //   .. the effect of +=100 will be seen here.
   }
   final a;
   final f;