[Users] OpenSER crashes when attempting to use null avp variable

Hello, I'm using openser 1.2.0. I have following section in my openser.cfg. avp_db_query("SELECT active, accountcode FROM openser_ip_auth WHERE ip_addr='$src_ip'","$avp(s:active);$avp(s:accountcode)"); xlog("L_INFO", "\n$avp(s:active):::$avp(s:accountcode)\n"); if (!avp_check("$avp(s:active)","eq/1/I")) { xlog("L_ERR", "$si [$Tf]: $rm $fu -> $ru: REGISTER: bad credentials, ask for credentials\n"); #authentication failed www_challenge("", "0"); setflag(1); return; } Basically I'm doing IP based authentication. I have used the similar method in version 1.1 but openser 1.2.0 crashes if the query in avp_db_query returns no rows which keeps those two avp variables null. Is this a bug or I'm doing something wrong? I also tried "==" operator for comparison but it crashes whenever it is trying to access one of those two variables. -- Regards Ruchir Brahmbhatt Ecosmob Technologies