Fix new test in checked mode

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 "platform/assert.h"
 #include "vm/dart_api_impl.h"
 #include "vm/unit_test.h"
 
 namespace dart {
@@ skipping 140 matching lines @@
   breakpoint_hit_counter = 0;
   Dart_Handle retval = Invoke(lib, "main");
   EXPECT(!Dart_IsError(retval));
   EXPECT(breakpoint_hit_counter == 2);
 }
 
 
 TEST_CASE(Debug_InspectObject) {
   const char* kScriptChars =
     " class A { \n"
-    "   int a_field = 'a'; \n"
+    "   var a_field = 'a'; \n"
     "   static var bla = 'yada yada yada';\n"
     "   var d = 42.1; \n"
     " } \n"
     " class B extends A { \n"
     "   var oneDay = const Duration(hours: 24); \n"
     "   static var bla = 'blah blah'; \n"
     " } \n"
     " get_b() { return new B(); } \n"
     " get_int() { return 666; } \n";
 
@@ skipping 165 matching lines @@
   EXPECT(Dart_IsString(source));
   char const* source_chars;
   Dart_StringToCString(source, &source_chars);
   printf("\n=== source: ===\n%s", source_chars);
   EXPECT_STREQ(kScriptChars, source_chars);
 }
 
 #endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart