fs/jffs2/acl.c: remove null test before kfree

Fix checkpatch warning:
WARNING: kfree(NULL) is safe this check is probably not required

Cc: David Woodhouse <dwmw2@infradead.org>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 009ec0b..2f7a3c0 100644
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -202,8 +202,7 @@
 	} else {
 		acl = ERR_PTR(rc);
 	}
-	if (value)
-		kfree(value);
+	kfree(value);
 	if (!IS_ERR(acl))
 		set_cached_acl(inode, type, acl);
 	return acl;