btrfs/179: call sync qgroup counts

On some systems btrfs/179 fails because the check finds that there
is difference in the qgroup counts.

So as the intention of the test case is to test any hang like
situation during heavy snapshot create/delete operation with quota
enabled, so make sure the qgroup counts are consistent at the end of
the test case, so to make the check happy.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Qu Wenruo <quwenruo.btrfs@gmx.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
1 file changed