fs/jffs2/xattr.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/xattr.c b/fs/jffs2/xattr.c
index ad0f2e2..d72817a 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -756,8 +756,7 @@
 	for (i=0; i < XATTRINDEX_HASHSIZE; i++) {
 		list_for_each_entry_safe(xd, _xd, &c->xattrindex[i], xindex) {
 			list_del(&xd->xindex);
-			if (xd->xname)
-				kfree(xd->xname);
+			kfree(xd->xname);
 			jffs2_free_xattr_datum(xd);
 		}
 	}