Subj : src/sbbs3/mqtt.c
To   : Git commit to main/sbbs/master
From : Rob Swindell (on Windows)
Date : Thu Aug 10 2023 12:30 pm

https://gitlab.synchro.net/main/sbbs/-/commit/e7b1b02ea4167743a8fa6b22
Modified Files:
	src/sbbs3/mqtt.c
Log Message:
Allow a msg value of "0" to clear/unset the node/+/set/# topics/flags

e.g. publishing "0" to node/#/set/intr will clear the node-interrupt flag.
Any non-zero message value will "set" the flag. Same is true for the
lock, down, and rerun topics/flags.

These node attributes (misc) flags could be cleared previously
by setting the 'misc' topic (e.g. to 0), but since that's not an atomic
read/modify/write operation, other set misc flags could be lost clearing flags
in that manner.

.