BUG_ON() Conversion in mm/mempool.c

this changes if() BUG(); constructs to BUG_ON() which is
cleaner, contains unlikely() and can better optimized away.

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
diff --git a/mm/mempool.c b/mm/mempool.c
index f71893e..9ef13dd 100644
--- a/mm/mempool.c
+++ b/mm/mempool.c
@@ -183,8 +183,8 @@
  */
 void mempool_destroy(mempool_t *pool)
 {
-	if (pool->curr_nr != pool->min_nr)
-		BUG();		/* There were outstanding elements */
+	/* Check for outstanding elements */
+	BUG_ON(pool->curr_nr != pool->min_nr);
 	free_pool(pool);
 }
 EXPORT_SYMBOL(mempool_destroy);