If mosquitto fails to open the last socket in it's loop, it aborts

The fix for the last bug I reported (ipv6 socket failure) introduced a different bug: The last few lines in the function "mqtt3_socket_listen" are:
if(sock >= 0){
    return 0;
}else{
   return 1;
}

This causes mosquitto to exit if the last socket open fails. I think the expected logic is to fail if not even one socket open succeeds. The change I'm requesting is
<code>
    // We need to have at least one working socket
    if(*sock_count > 0){
        return 0;
    }else{
        return 1;
    }
</code>