fix constructor suggestion element names

pkg/analysis_server/lib/src/services/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_server/src/protocol.dart' as protocol
     show Element, ElementKind;
@@ skipping 178 matching lines @@
   }
 
   /**
    * For the given class and constructor,
    * add a suggestion of the form B(...) or B.name(...).
    * If the given constructor is `null`
    * then add a default constructor suggestion.
    */
   CompletionSuggestion _addSuggestion(
       ClassDeclaration classDecl, ConstructorDeclaration constructorDecl) {
+    SimpleIdentifier elemId;
     String completion = classDecl.name.name;
     if (constructorDecl != null) {
-      SimpleIdentifier elemId = constructorDecl.name;
+      elemId = constructorDecl.name;
       if (elemId != null) {
         String name = elemId.name;
         if (name != null && name.length > 0) {
           completion = '$completion.$name';
         }
       }
     }
     bool isDeprecated =
         constructorDecl != null && _isDeprecated(constructorDecl);
     List<String> parameterNames = new List<String>();
@@ skipping 31 matching lines @@
         paramBuf.write(' ');
         paramBuf.write(paramName);
         ++paramCount;
       }
     }
     if (paramCount > requiredParameterCount) {
       paramBuf.write(hasNamedParameters ? '}' : ']');
     }
     paramBuf.write(')');
     protocol.Element element = _createElement(
-        protocol.ElementKind.CONSTRUCTOR, null,
+        protocol.ElementKind.CONSTRUCTOR, elemId,
         parameters: paramBuf.toString());
-    element.name = completion;
     element.returnType = classDecl.name.name;
     CompletionSuggestion suggestion = new CompletionSuggestion(
         CompletionSuggestionKind.INVOCATION,
         isDeprecated ? DART_RELEVANCE_LOW : DART_RELEVANCE_DEFAULT, completion,
         completion.length, 0, isDeprecated, false,
         declaringType: classDecl.name.name,
         element: element,
         parameterNames: parameterNames,
         parameterTypes: parameterTypes,
         requiredParameterCount: requiredParameterCount,
@@ skipping 416 matching lines @@
   bool _isVoid(TypeName returnType) {
     if (returnType != null) {
       Identifier id = returnType.name;
       if (id != null && id.name == 'void') {
         return true;
       }
     }
     return false;
   }
 }