Fixed an error in the Russian language voicemail intro.

(issue #10458, reported and patched by Oleh)



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@79527 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_voicemail.c

@@ -5603,7 +5603,7 @@ static int vm_intro_ru(struct ast_channel *chan,struct vm_state *vms)
 
 	if (!res && vms->oldmessages) {
 		lastnum = get_lastdigits(vms->oldmessages);
-		dcnum = vms->newmessages - lastnum;
+		dcnum = vms->oldmessages - lastnum;
 		if (dcnum)
 			res = say_and_wait(chan, dcnum, chan->language);
 		if (!res && lastnum) {