Add the implicit return in the correct sequence node

runtime/vm/parser.h

 // Copyright (c) 2012, 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.
 
 #ifndef VM_PARSER_H_
 #define VM_PARSER_H_
 
 #include "include/dart_api.h"
 
 #include "platform/assert.h"
@@ skipping 515 matching lines @@
                                             Array* default_values);
   SequenceNode* ParseInvokeFieldDispatcher(const Function& func,
                                            Array* default_values);
   SequenceNode* ParseImplicitClosure(const Function& func,
                                      Array* default_values);
 
   void BuildDispatcherScope(const Function& func,
                             const ArgumentsDescriptor& desc,
                             Array* default_values);
 
+  void EnsureHasReturnStatement(SequenceNode* seq, intptr_t return_pos);
   void ChainNewBlock(LocalScope* outer_scope);
   void OpenBlock();
   void OpenLoopBlock();
   void OpenFunctionBlock(const Function& func);
   void OpenAsyncClosure();
   RawFunction* OpenAsyncFunction(intptr_t formal_param_pos);
   RawFunction* OpenSyncGeneratorFunction(intptr_t func_pos);
   SequenceNode* CloseSyncGenFunction(const Function& closure,
                                      SequenceNode* closure_node);
   void AddSyncGenClosureParameters(ParamList* params);
@@ skipping 314 matching lines @@
 
   // Indentation of parser trace.
   intptr_t trace_indent_;
 
   DISALLOW_COPY_AND_ASSIGN(Parser);
 };
 
 }  // namespace dart
 
 #endif  // VM_PARSER_H_