LU-7450 osd: call commit_callback if no write updates

LU-7450 osd: call commit_callback if no write updates

If it does not need write updates in some failure cases,
top_trans_stop should also call commit_callback to help
release the top_thandle in the commit list. Otherwise
it will stay in the commit list forever, as well as the
following top thandle, then update logs will be culmulated,
and cause long time recovery.

Signed-off-by: Di Wang <di.wang@intel.com>
Change-Id: I1feaf0bd6d20f14dfabb4572f49818083e697dbb
Reviewed-on: http://review.whamcloud.com/17268
Tested-by: Jenkins
Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>