PPAPI plugin: Remove duplicate CLOSE that is not necessary because MakeFileDesc calls Unref on failure and closes the file descriptor. This along with a scoped_ptr for nacl::DescWrapper removes the need for a do-while in UrlDidOpen.
PPAPI plugin: Remove duplicate CLOSE that is not necessary because
MakeFileDesc calls Unref on failure and closes the file descriptor. This
along with a scoped_ptr for nacl::DescWrapper removes the need for a do-while
in UrlDidOpen.

BUG=none
TESTED=examples_ppapi.html

Review URL: http://codereview.chromium.org/6512005

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@4298 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client