fix NSM error when completing imported inherited private fields

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

Index: pkg/analysis_server/lib/src/services/completion/imported_computer.dart
diff --git a/pkg/analysis_server/lib/src/services/completion/imported_computer.dart b/pkg/analysis_server/lib/src/services/completion/imported_computer.dart
index 20315572da68d3f98689dc9653f781b119351e7e..d4a91e7edd5cbe8fe24ada61aeb9f8ed26a8d352 100644
--- a/pkg/analysis_server/lib/src/services/completion/imported_computer.dart
+++ b/pkg/analysis_server/lib/src/services/completion/imported_computer.dart
@@ -143,7 +143,7 @@ class _ImportedSuggestionBuilder extends ElementSuggestionBuilder
    */
   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;
@@ -158,7 +158,7 @@ class _ImportedSuggestionBuilder extends ElementSuggestionBuilder
         }
       }
       addSuggestion(elem, relevance: relevance);
-    });
+    };
   }
 
   /**