Fix recursive pthread_once.
Fix recursive pthread_once.

  a7805a1 Fix recursive pthread_once.

  BUG=http://code.google.com/p/nativeclient/issues/detail?id=2398
Review URL: http://codereview.chromium.org/8430029

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@7067 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

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