Subj : src/sbbs3/js_mqtt.c
To   : Git commit to main/sbbs/master
From : Rob Swindell (on Windows 11)
Date : Sun Feb 11 2024 09:47 pm

https://gitlab.synchro.net/main/sbbs/-/commit/3a389c0ca6d2b8db6ce07a2b
Modified Files:
	src/sbbs3/js_mqtt.c
Log Message:
Fix heap corruption in Windows builds

This bug caused crashes in the Windows build of sbbs when using the ;spy
sysop command with MQTT enabled.

Memory that is allocated in one DLL (e.g. sbbs.dll) must be freed in that same
DLL (e.g. sbbs.dll, not mosquitto.dll).

mosquitto_message_free() here frees the msg pointer, but we didn't allocate
it in mosquitto.dll in the first place, so that's wrong. The proper mosquitto
function to use in this case is mosquitto_message_free_contents().

.