MEETME_INFO should not return a literal error message to the dialplan.

(closes issue #15450)
 Reported by: JimVanM
 Patches: 
       meetmeinfopatch.diff.txt uploaded by dbrooks (license 790)
 Tested by: JimVanM


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@228191 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_meetme.c

@@ -6450,7 +6450,8 @@ static int acf_meetme_info(struct ast_channel *chan, const char *cmd, char *data
 	} else if (result == -1) {
 		snprintf(buf, len, "%s %s", "Error: invalid keyword:", args.keyword);
 	} else if (result == -2) {
-		snprintf(buf, len, "Error: conference (%s) not found", args.confno);
+		ast_log(LOG_NOTICE, "Error: conference (%s) not found\n", args.confno); 
+		snprintf(buf, len, "0");
 	}
 
 	return 0;