https://gitlab.synchro.net/main/sbbs/-/commit/2b4691d3d31ad8103b0d999f
Modified Files:
	src/syncterm/modem.c rlogin.c src/xpdev/sockwrap.c xpbeep.c
Log Message:
Return value of write() is tainted

Since Coverity treates the return value of write() as tainted
(valid for negative values, not so valid for positive ones), do an
upper bound check on the result as well as lower bound to clear
the tainted flag.
--- SBBSecho 3.23-Linux