Merged revisions 174041 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

........
  r174041 | file | 2009-02-06 15:28:53 -0400 (Fri, 06 Feb 2009) | 4 lines
  
  Don't subscribe to a mailbox on pseudo channels. It is futile. This solves an issue where duplicated pseudo channels would cause a crash because the first one would unsubscribe and the next one would also try to unsubscribe the same subscription.
  (closes issue #14322)
  Reported by: amessina
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git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.1@174043 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_dahdi.c

@@ -9120,7 +9120,7 @@ static struct dahdi_pvt *mkintf(int channel, const struct dahdi_chan_conf *conf,
 		tmp->cid_ton = 0;
 		ast_copy_string(tmp->cid_name, conf->chan.cid_name, sizeof(tmp->cid_name));
 		ast_copy_string(tmp->mailbox, conf->chan.mailbox, sizeof(tmp->mailbox));
-		if (!ast_strlen_zero(tmp->mailbox)) {
+		if (channel != CHAN_PSEUDO && !ast_strlen_zero(tmp->mailbox)) {
 			char *mailbox, *context;
 			mailbox = context = ast_strdupa(tmp->mailbox);
 			strsep(&context, "@");