LU-2737 osc: double unlock in osc_lru_shrink()

It could unlock twice in osc_lru_shrink() if the cl_io_init() failed.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Change-Id: Idf3ebafced7f7d3a68c13ea20d12cf221e9d74ce
Reviewed-on: http://review.whamcloud.com/5258
Reviewed-by: Bobi Jam <bobijam@gmail.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
LU-2728 fld: check for NULL param in fldb_seq_stop()

Check for NULL param in fldb_seq_stop().

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I44ed10f9ce8bceabb203e6ef0b843b23340ced2b
Reviewed-on: http://review.whamcloud.com/5238
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>