Set hasImplicitReturnType for variable initializer functions.

pkg/analyzer/lib/src/dart/element/builder.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 analyzer.src.dart.element.builder;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
@@ skipping 539 matching lines @@
     }
     parameter.const3 = node.isConst;
     parameter.final2 = node.isFinal;
     parameter.parameterKind = node.kind;
     // set initializer, default value range
     Expression defaultValue = node.defaultValue;
     if (defaultValue != null) {
       _visit(holder, defaultValue);
       FunctionElementImpl initializer =
           new FunctionElementImpl.forOffset(defaultValue.beginToken.offset);
+      initializer.hasImplicitReturnType = true;
       initializer.functions = holder.functions;
       initializer.labels = holder.labels;
       initializer.localVariables = holder.localVariables;
       initializer.parameters = holder.parameters;
       initializer.synthetic = true;
       initializer.type = new FunctionTypeImpl(initializer);
       parameter.initializer = initializer;
       parameter.defaultValueCode = defaultValue.toSource();
     }
     // visible range
@@ skipping 581 matching lines @@
       _currentHolder.addTopLevelVariable(variable);
       variableName.staticElement = element;
     }
     element.const3 = isConst;
     element.final2 = isFinal;
     if (hasInitializer) {
       ElementHolder holder = new ElementHolder();
       _visit(holder, node.initializer);
       FunctionElementImpl initializer =
           new FunctionElementImpl.forOffset(node.initializer.beginToken.offset);
+      initializer.hasImplicitReturnType = true;
       initializer.functions = holder.functions;
       initializer.labels = holder.labels;
       initializer.localVariables = holder.localVariables;
       initializer.synthetic = true;
       initializer.type = new FunctionTypeImpl(initializer);
       element.initializer = initializer;
       holder.validate();
     }
     if (element is PropertyInducingElementImpl) {
       PropertyAccessorElementImpl getter =
@@ skipping 226 matching lines @@
     return null;
   }
 
   /**
    * Return the lexical identifiers associated with the given [identifiers].
    */
   static List<String> _getIdentifiers(NodeList<SimpleIdentifier> identifiers) {
     return identifiers.map((identifier) => identifier.name).toList();
   }
 }