Don't do a NULL-pointer dereference when a remote server using the
IRC+ protocol sends an invalid PASS command without the required
<serverversion> parameter ...
if (type && strcmp(type, PROTOIRCPLUS) == 0) {
/* The peer seems to be a server which supports the
* IRC+ protocol (see doc/Protocol.txt). */
- serverver = ptr + 1;
- flags = strchr(serverver, ':');
+ serverver = ptr ? ptr + 1 : "?";
+ flags = strchr(ptr ? serverver : impl, ':');
if (flags) {
*flags = '\0';
flags++;