I have updated to the latest 5.41 version.

I was troubleshooting another problem and I discovered dozens of lines in the log file with "Remove session callback, Deallocating application specific data for session connect address":

2017.04.19 14:49:49 LOG7[17483]: Service [pgbouncer-client] started
2017.04.19 14:49:49 LOG7[17483]: Option TCP_NODELAY set on local socket
2017.04.19 14:49:49 LOG5[17483]: Service [pgbouncer-client] accepted connection from x.x.x.x:36018
2017.04.19 14:49:49 LOG6[17483]: Peer certificate required
2017.04.19 14:49:49 LOG7[17483]: TLS state (accept): before/accept initialization
2017.04.19 14:49:49 LOG7[17483]: SNI: no virtual services defined
2017.04.19 14:49:49 LOG7[17483]: TLS state (accept): SSLv3 read client hello A
2017.04.19 14:49:49 LOG7[17483]: TLS state (accept): SSLv3 write server hello A
2017.04.19 14:49:49 LOG7[17483]: TLS state (accept): SSLv3 write change cipher spec A
2017.04.19 14:49:49 LOG7[17483]: TLS state (accept): SSLv3 write finished A
2017.04.19 14:49:49 LOG7[17483]: TLS state (accept): SSLv3 flush data
2017.04.19 14:49:49 LOG7[17483]: TLS state (accept): SSLv3 read finished A
2017.04.19 14:49:49 LOG7[17483]: Remove session callback
2017.04.19 14:49:49 LOG7[17483]: Deallocating application specific data for session connect address
2017.04.19 14:49:49 LOG7[17483]: Remove session callback
2017.04.19 14:49:49 LOG7[17483]: Deallocating application specific data for session connect address
...

Can anyone explain me what it is about ?

Thank you,

Florian