commit fa3d2ba61a71b209e6659b13e61c8b3175a2c7df
Author: Michael Buckley <michael@buckleyisms.com>
Date:   Mon Dec 18 15:08:41 2023 -0800

    Free p->payload after an error in _libssh2_packet_add

diff --git a/src/transport.c b/src/transport.c
index a8bb588a..07f4f231 100644
--- a/src/transport.c
+++ b/src/transport.c
@@ -323,6 +323,7 @@ fullpacket(LIBSSH2_SESSION * session, int encrypted /* 1 or 0 */ )
             return rc;
         if(rc) {
             session->fullpacket_state = libssh2_NB_state_idle;
+            LIBSSH2_FREE(session, p->payload);
             return rc;
         }
     }