Enable "musicclass" setting for sip peers as per the config sample.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@8281 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_sip.c

@@ -12172,7 +12172,7 @@ static struct sip_peer *build_peer(const char *name, struct ast_variable *v, int
 			}
 		} else if (!strcasecmp(v->name, "accountcode")) {
 			ast_copy_string(peer->accountcode, v->value, sizeof(peer->accountcode));
-		} else if (!strcasecmp(v->name, "musiconhold")) {
+		} else if (!strcasecmp(v->name, "musicclass") || !strcasecmp(v->name, "musiconhold")) {
 			ast_copy_string(peer->musicclass, v->value, sizeof(peer->musicclass));
 		} else if (!strcasecmp(v->name, "mailbox")) {
 			ast_copy_string(peer->mailbox, v->value, sizeof(peer->mailbox));