ocfs2: use swap() in dx_leaf_sort_swap()

---
 fs/ocfs2/dir.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
 
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index a7f01f3..02878a8 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -3543,13 +3543,10 @@ static void dx_leaf_sort_swap(void *a, void *b, int size)
 {
 	struct ocfs2_dx_entry *entry1 = a;
 	struct ocfs2_dx_entry *entry2 = b;
-	struct ocfs2_dx_entry tmp;
 
 	BUG_ON(size != sizeof(*entry1));
 
-	tmp = *entry1;
-	*entry1 = *entry2;
-	*entry2 = tmp;
+	swap(*entry1, *entry2);
 }
 
 static int ocfs2_dx_leaf_same_major(struct ocfs2_dx_leaf *dx_leaf)