ext4: remove NULL check before calling kmem_cache_destroy()

Signed-off-by: NSean Fu <fxinrong@gmail.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>

fs/ext4/extents_status.c

@@ -162,7 +162,6 @@ int __init ext4_init_es(void)
 
 void ext4_exit_es(void)
 {
-	if (ext4_es_cachep)
 	kmem_cache_destroy(ext4_es_cachep);
 }
 

fs/ext4/mballoc.c

@@ -2537,7 +2537,6 @@ static void ext4_groupinfo_destroy_slabs(void)
 	int i;
 
 	for (i = 0; i < NR_GRPINFO_CACHES; i++) {
-		if (ext4_groupinfo_caches[i])
 		kmem_cache_destroy(ext4_groupinfo_caches[i]);
 		ext4_groupinfo_caches[i] = NULL;
 	}