fix NSM error when completing imported inherited private fields

pkg/analysis_server/lib/src/services/completion/imported_computer.dart

 // Copyright (c) 2014, 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 services.completion.computer.dart.toplevel;
 
 import 'dart:async';
 import 'dart:collection';
 
 import 'package:analysis_server/src/protocol_server.dart'
@@ skipping 125 matching lines @@
     DartCompletionCache cache = request.cache;
     _addFilteredSuggestions(filterText, cache.importedConstructorSuggestions);
     _addFilteredSuggestions(filterText, cache.libraryPrefixSuggestions);
   }
 
   /**
    * Add imported element suggestions.
    */
   void _addElementSuggestions(List<Element> elements,
       {int relevance: DART_RELEVANCE_DEFAULT}) {
-    elements.forEach((Element elem) {
+    for (Element elem in elements) {
       if (elem is! ClassElement) {
         if (optype.includeOnlyTypeNameSuggestions) {
           return;
         }
         if (elem is ExecutableElement) {
           DartType returnType = elem.returnType;
           if (returnType != null && returnType.isVoid) {
             if (!optype.includeVoidReturnSuggestions) {
               return;
             }
           }
         }
       }
       addSuggestion(elem, relevance: relevance);
-    });
+    };
   }
 
   /**
    * Add suggestions which start with the given text.
    */
   _addFilteredSuggestions(
       String filterText, List<CompletionSuggestion> unfiltered) {
     //TODO (danrubel) Revisit this filtering once paged API has been added
     unfiltered.forEach((CompletionSuggestion suggestion) {
       if (filterText.length > 0) {
@@ skipping 81 matching lines @@
       _addFilteredSuggestions(filterText, cache.libraryPrefixSuggestions);
     }
     if (optype.includeReturnValueSuggestions) {
       _addFilteredSuggestions(filterText, cache.otherImportedSuggestions);
     }
     if (optype.includeVoidReturnSuggestions) {
       _addFilteredSuggestions(filterText, cache.importedVoidReturnSuggestions);
     }
   }
 }