tree c4b44b6da4ee7d803d9fee8e5dd3c1e1efb00578
parent 6d24e0866f61aba0ac3023408ead083ad9b6cdab
author tao.pei <tao.pei@ck-telecom.com> 1439813929 +0800
committer tao.pei <tao.pei@ck-telecom.com> 1439814137 +0800

Use errno correctly.

Make sure to check errno prior to doing anything
else that can modify it.

Change-Id: Id81ecc2c3fa07c222ab1e2ef6441331a1eaad635