UBIFS: remove dead GC LEB recovery piece of code

This patch removes a piece of code in 'ubifs_rcvry_gc_commit()' which is never
executed. We call 'ubifs_find_dirty_leb()' function with min_space =
wbuf->offs, so if it returns us an LEB, it is guaranteed to have at lease
'wbuf->offs' bytes of free+dirty space. So we can remove the subsequent code
which deals with "returned LEB has less than 'wbuf->offs' bytes of free+dirty
space". This simplifies 'ubifs_rcvry_gc_commit()' a little.

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

fs/ubifs/recovery.c

@@ -1127,20 +1127,9 @@ int ubifs_rcvry_gc_commit(struct ubifs_info *c)
 	}
 
 	ubifs_assert(!(lp.flags & LPROPS_INDEX));
+	ubifs_assert(lp.free + lp.dirty >= wbuf->offs);
 	lnum = lp.lnum;
 
-	/*
-	 * There was no empty LEB so the used space in the dirtiest LEB must fit
-	 * in the GC head LEB.
-	 */
-	if (lp.free + lp.dirty < wbuf->offs) {
-		dbg_rcvry("LEB %d doesn't fit in GC head LEB %d:%d",
-			  lnum, wbuf->lnum, wbuf->offs);
-		err = ubifs_return_leb(c, lnum);
-		if (err)
-			return err;
-		goto find_free;
-	}
 	/*
 	 * We run the commit before garbage collection otherwise subsequent
 	 * mounts will see the GC and orphan deletion in a different order.