https://gitlab.synchro.net/main/sbbs/-/commit/929fc7cde612b44a7dbb9489
Modified Files:
	src/sbbs3/sexyz.c
Log Message:
Fix error on systems where poll() is preferred (ie: *nix)
Broken in fa6202f2a58, after poll() indicates there is data to
read, recv_buffer() would return a timeout rather than set the
timeout to zero and retry the recv().
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