btrfs-progs: remove NULL-ptr judge before free for btrfs-progs

free(3) already checks the pointer for NULL, no need to do it
on your own. This patch make the change globally.

Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/volumes.c b/volumes.c
index bd01270..e25b4c0 100644
--- a/volumes.c
+++ b/volumes.c
@@ -1267,13 +1267,11 @@ int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw,
 again:
 	ce = search_cache_extent(&map_tree->cache_tree, logical);
 	if (!ce) {
-		if (multi)
-			kfree(multi);
+		kfree(multi);
 		return -ENOENT;
 	}
 	if (ce->start > logical || ce->start + ce->size < logical) {
-		if (multi)
-			kfree(multi);
+		kfree(multi);
 		return -ENOENT;
 	}