Remove return in visitInitializers.

pkg/compiler/lib/src/resolution/semantic_visitor.dart

 // Copyright (c) 2015, 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.
 
 library dart2js.semantics_visitor;
 
 import '../constants/expressions.dart';
 import '../dart2jslib.dart' show invariant, MessageKind;
 import '../dart_types.dart';
 import '../elements/elements.dart';
@@ skipping 78 matching lines @@
     } else {
       return structure.dispatch(declVisitor, node, arg);
     }
   }
 
   visitInitializers(NodeList initializers, A arg) {
     if (initializers != null) {
       for (Node node in initializers) {
         InitializerStructure structure = computeInitializerStructure(node);
         if (structure == null) {
-          return internalError(node, 'No structure for $node');
+          internalError(node, 'No structure for $node');
         } else {
-          return structure.dispatch(declVisitor, node, arg);
+          structure.dispatch(declVisitor, node, arg);
         }
       }
     }
   }
 
   visitParameters(NodeList parameters, A arg) {
     List<ParameterStructure> structures =
         computeParameterStructures(parameters);
     for (ParameterStructure structure in structures) {
       structure.dispatch(declVisitor, arg);
@@ skipping 4309 matching lines @@
   ///       C() : this._(42);
   ///     }
   ///
   R errorUnresolvedThisConstructorInvoke(
       Send node,
       Element element,
       NodeList arguments,
       Selector selector,
       A arg);
 }