[Coverity] Fixed resource leak.

DeepCopy creates a ListValue*, which swap (correctly) doesn't free.

CID=103840
R=brettw,raymes

BUG=
TEST=


Review URL: http://codereview.chromium.org/10168015

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@133478 0039d316-1c4b-4281-b951-d872f2087c98

ppapi/shared_impl/private/ppb_x509_certificate_private_shared.cc

@@ -15,7 +15,8 @@ PPB_X509Certificate_Fields::PPB_X509Certificate_Fields() {}
 
 PPB_X509Certificate_Fields::PPB_X509Certificate_Fields(
     const PPB_X509Certificate_Fields& fields) {
-  values_.Swap(fields.values_.DeepCopy());
+  scoped_ptr<ListValue> new_values(fields.values_.DeepCopy());
+  values_.Swap(new_values.get());
 }
 
 void PPB_X509Certificate_Fields::SetField(