BUG/MINOR: quic: purge conn Rx packet list on release

When releasing a quic_conn instance, free all remaining Rx packets in
quic_conn.rx.pkt_list. This partially fixes a memory leak on Rx packets
which can be observed after several QUIC connections establishment.

This should partially resolve github issue #1751.

It must be backported up to 2.6.
1 file changed