tree aadfc9ad81660e5ef11121a4529213e8cd1062de
parent f54fb859da53f04a443c5e3f4cb9b936ed42d227
author Tsutomu Itoh <t-itoh@jp.fujitsu.com> 1346912290 -0600
committer Chris Mason <chris.mason@fusionio.com> 1349119154 -0400

Btrfs: check return value of ulist_alloc() properly

ulist_alloc() has the possibility of returning NULL.
So, it is necessary to check the return value.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>