Ensure the onhold flag is set no matter what when being put on hold.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@64044 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -5276,6 +5276,8 @@ static int process_sdp(struct sip_pvt *p, struct sip_request *req)
 			ast_set_flag(&p->flags[1], SIP_PAGE2_CALL_ONHOLD_ONEDIR);
 		else if (sendonly == 2)	/* Inactive stream */
 			ast_set_flag(&p->flags[1], SIP_PAGE2_CALL_ONHOLD_INACTIVE);
+		else
+			ast_set_flag(&p->flags[1], SIP_PAGE2_CALL_ONHOLD);
 		if (global_notifyhold)
 			sip_peer_hold(p, 1);
 	}