do not suggest types when editing a name in a variable declaration

pkg/analysis_services/lib/src/completion/local_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.local;
 
 import 'dart:async';
 
 import 'package:analysis_services/completion/completion_computer.dart';
 import 'package:analysis_services/completion/completion_suggestion.dart';
@@ skipping 160 matching lines @@
       if (param.identifier != null) {
         addSuggestion(param.identifier, CompletionSuggestionKind.PARAMETER);
       }
     });
     visitNode(node);
   }
 
   visitNode(AstNode node) {
     node.parent.accept(this);
   }
+
+  visitVariableDeclaration(VariableDeclaration node) {
+    // Do not add suggestions if editing the name in a var declaration
+    SimpleIdentifier name = node.name;
+    if (name == null || name.offset < offset || offset > name.end) {
+      visitNode(node);
+    }
+  }
 }