dlm: Delete an error message for a failed memory allocation in dlm_recover_waiters_pre()

Omit an extra message for a memory allocation failure in this function.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <[e-mail]>
Signed-off-by: David Teigland <[e-mail]>

fs/dlm/lock.c

···
 	int dir_nodeid;
 
 	ms_stub = kmalloc(sizeof(*ms_stub), GFP_KERNEL);
-	if (!ms_stub) {
-		log_error(ls, "dlm_recover_waiters_pre no mem");
+	if (!ms_stub)
 		return;
-	}
 
 	mutex_lock(&ls->ls_waiters_mutex);