Change the type inference for fields in dart2js

lib/compiler/implementation/universe/function_set.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 // TODO(kasperl): This actually holds getters and setters just fine
 // too and stricly they aren't functions. Maybe this needs a better
 // name -- something like ElementSet seems a bit too generic.
 class FunctionSet extends PartialTypeTree {
 
   FunctionSet(Compiler compiler) : super(compiler);
@@ skipping 105 matching lines @@
       return true;
     });
     return result;
   }
 
   void forEach(Function f) {
     if (root === null) return;
     root.visitRecursively((FunctionSetNode node) {
       node.membersByName.forEach(
           (SourceString _, Element element) => f(element));
-        return true;
+      return true;
     });
   }
 }
 
 class FunctionSetNode extends PartialTypeTreeNode {
 
   final Map<SourceString, Element> membersByName;
 
   FunctionSetNode(ClassElement type) : super(type),
       membersByName = new Map<SourceString, Element>();
 
 }