UBIFS: simplify dbg_dump_budg calling conventions

The current 'dbg_dump_budg()' calling convention is that the
'c->space_lock' spinlock is held. However, none of the callers
actually use it from contects which have 'c->space_lock' locked,
so all callers have to explicitely lock and unlock the spinlock.
This is not very sensible convention. This patch changes it and
makes 'dbg_dump_budg()' lock the spinlock instead of imposing this
to the callers. This simplifies the code a little.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>

fs/ubifs/tnc_commit.c

@@ -383,9 +383,7 @@ static int layout_in_gaps(struct ubifs_info *c, int cnt)
 				 * option which forces in-the-gaps is enabled.
 				 */
 				ubifs_err("out of space");
-				spin_lock(&c->space_lock);
 				dbg_dump_budg(c);
-				spin_unlock(&c->space_lock);
 				dbg_dump_lprops(c);
 			}
 			/* Try to commit anyway */