[PATCH 3.12 15/72] dm btree: fix leak of bufio-backed block in btree_split_beneath error path

From: Mike Snitzer 3.12-stable review patch. If anyone has any objections, please let me know. === commit 4dcb8b57df3593dcb20481d9d6cf79d1dc1534be upstream. btree_split_beneath()'s error path had an outstanding FIXME that speaks directly to the potential for _not_ cleaning up a

[PATCH 3.12 15/72] dm btree: fix leak of bufio-backed block in btree_split_beneath error path

From: Mike Snitzer 3.12-stable review patch. If anyone has any objections, please let me know. === commit 4dcb8b57df3593dcb20481d9d6cf79d1dc1534be upstream. btree_split_beneath()'s error path had an outstanding FIXME that speaks directly to the potential for