fix(kamailio): Store contact to be used for BYE only if there are multiple Record-Route (#83)

Author: Stell0

modules/kamailio/config/kamailio.cfg

@@ -242,7 +242,7 @@ request_route {
         record_route();
 
         # Store Contact URI for later use in dialog, especially for BYE requests
-        if (is_method("INVITE") && has_body("application/sdp") && $dlg_var(direction)== "in") {
+        if (is_method("INVITE") && has_body("application/sdp") && $dlg_var(direction)== "in" && $rr_count > 1) {
             # Store the Contact header from 200 OK responses to INVITE
             $dlg_var(target_contact) = $ct;
             if ($shv(debug) == 1) xlog('L_WARN', "[DEV] - $ci $rm-$cs - Stored Contact: $dlg_var(target_contact) \n");