Hello, I'm using pjsip 2.9 for gateway application (pjsip-ua layer). After stress testing my application I found that there are lot of ACK tdata's with 1 reference but without any active dialogs. There are no leakage without stress load though. I can't find the exact condition when leakage occurs, but I can fix it with this patch. I want to know if I could break anything with this?