print_xattr_list: use printaddr

* xattr.c (print_xattr_list): Use printaddr.
diff --git a/xattr.c b/xattr.c
index 37c369b..da22fce 100644
--- a/xattr.c
+++ b/xattr.c
@@ -105,7 +105,7 @@
 print_xattr_list(struct tcb *tcp, unsigned long addr, unsigned long size)
 {
 	if (syserror(tcp)) {
-		tprintf("%#lx", addr);
+		printaddr(addr);
 	} else {
 		unsigned long len =
 			(size < (unsigned long) tcp->u_rval) ?