[DLM] Compile fix

A one liner fix which got missed from the earlier patches.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Cc: Fabio Massimo Di Nitto <fabbione@ubuntu.com>
Cc: David Teigland <teigland@redhat.com>

fs/dlm/lock.c

@@ -1098,7 +1098,7 @@ void dlm_scan_timeout(struct dlm_ls *ls)
 		}
 
 		if (do_cancel) {
-			log_debug(r->res_ls, "timeout cancel %x node %d %s",
+			log_debug(ls, "timeout cancel %x node %d %s",
 				  lkb->lkb_id, lkb->lkb_nodeid, r->res_name);
 			lkb->lkb_flags &= ~DLM_IFL_WATCH_TIMEWARN;
 			lkb->lkb_flags |= DLM_IFL_TIMEOUT_CANCEL;