dlm: use proper C for dlm/requestqueue stuff (and fix alignment bug)

a) don't cast the pointer to dlm_header *, we use it as dlm_message *
   anyway.
b) we copy the message into a queue element, then pass the pointer to
   copy to dlm_receive_message_saved(); declare it properly to make sure
   that we have the right alignment.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index ff4a198..d9f07a4 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -3802,7 +3802,7 @@
 				int nodeid)
 {
 	if (dlm_locking_stopped(ls)) {
-		dlm_add_requestqueue(ls, nodeid, (struct dlm_header *) ms);
+		dlm_add_requestqueue(ls, nodeid, ms);
 	} else {
 		dlm_wait_requestqueue(ls);
 		_receive_message(ls, ms);