LU-7064 obd: detect errors from llog_declare_destroy()

LU-7064 obd: detect errors from llog_declare_destroy()

The return value from llog_declare_destroy() in
llog_cancel_rec() is not used. This patch adds the same check.

Change-Id: I31c09d426e9e4ae5418531acd73a6428927e9bd3
Signed-off-by: Parinay Kondekar <parinay.kondekar@seagate.com>
Reviewed-on: http://review.whamcloud.com/17999
Tested-by: Jenkins
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>