https://gitlab.synchro.net/main/sbbs/-/commit/8b4d02103bb4a63ffcc360f3
Modified Files:
	src/sbbs3/ftpsrvr.c
Log Message:
Correct initialization of fmutex_t so the file descriptor is -1

For some reason, MSVC was initializing the time_t (second element of the
struct) to -1, not the int fd (the first element), which was initialized to
0. Weird.
--- SBBSecho 3.22-Linux