Fix checked mode failure

runtime/vm/debugger_api_impl_test.cc

 // 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.
 
 #include "include/dart_debugger_api.h"
 #include "include/dart_mirrors_api.h"
 #include "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/thread.h"
 #include "vm/unit_test.h"
@@ skipping 382 matching lines @@
   Dart_StackTrace trace;
   Dart_GetStackTrace(&trace);
   SaveStackTrace(trace);
 }
 
 
 static void InspectStackTest(bool optimize) {
   const char* kScriptChars =
       "void breakpointNow() {\n"
       "}\n"
-      "void helper(int a, int b, bool stop) {\n"
+      "int helper(int a, int b, bool stop) {\n"
       "  if (b == 99 && stop) {\n"
       "    breakpointNow();\n"
       "  }\n"
       "  int c = a*b;\n"
       "  return c;\n"
       "}\n"
       "int anotherMiddleMan(int one, int two, bool stop) {\n"
       "  return helper(one, two, stop);\n"
       "}\n"
       "int middleMan(int x, int limit, bool stop) {\n"
@@ skipping 1507 matching lines @@
 
   Dart_Handle list_type = Dart_InstanceGetType(list_access_test_obj);
   Dart_Handle super_type = Dart_GetSupertype(list_type);
   EXPECT(!Dart_IsError(super_type));
   super_type = Dart_GetSupertype(super_type);
   EXPECT(!Dart_IsError(super_type));
   EXPECT(super_type == Dart_Null());
 }
 
 }  // namespace dart