Valgrind: Fix a leak in GetValueFromDictionary for cocoa.

base/mac/foundation_util.mm

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/mac/foundation_util.h"
 
 #include <stdlib.h>
 #include <string.h>
 
 #include "base/file_path.h"
@@ skipping 220 matching lines @@
 }
 
 CFTypeRef GetValueFromDictionary(CFDictionaryRef dict,
                                  CFStringRef key,
                                  CFTypeID expected_type) {
   CFTypeRef value = CFDictionaryGetValue(dict, key);
   if (!value)
     return value;
 
   if (CFGetTypeID(value) != expected_type) {
-    std::string expected_type_name = base::SysCFStringRefToUTF8(
+    ScopedCFTypeRef<CFStringRef> expected_type_name(
         CFCopyTypeIDDescription(expected_type));
+    std::string expected_type_utf8 =
+        base::SysCFStringRefToUTF8(expected_type_name);
     DLOG(WARNING) << GetValueFromDictionaryErrorMessage(key,
-                                                        expected_type_name,
+                                                        expected_type_utf8,
                                                         value);
     return NULL;
   }
 
   return value;
 }
 
 void NSObjectRetain(void* obj) {
   id<NSObject> nsobj = static_cast<id<NSObject> >(obj);
   [nsobj retain];
@@ skipping 139 matching lines @@
         CFDictionaryGetValue(user_info.get(), kCFErrorDescriptionKey));
   }
   o << "Code: " << CFErrorGetCode(err)
     << " Domain: " << CFErrorGetDomain(err)
     << " Desc: " << desc.get();
   if(errorDesc) {
     o << "(" << errorDesc << ")";
   }
   return o;
 }