https://gitlab.synchro.net/main/sbbs/-/commit/f1243ec47b48128a725400db
Modified Files:
	src/sbbs3/getnode.cpp main.cpp userdat.c
Log Message:
Use opennodedat() always to open the node.dab file

Include O_CREAT access mode flag in opennodedat().

I experimented with excluding O_DENYNONE when the NM_CLOSENODEDAB flag is set
(to hopefully work-around MacOS Samba node.dab corruption issue), but that
didn't work with SBBSCTRL leaving the file open in SH_DENYNONE mode, so will
have revist that, but using a common open function helps.
--- SBBSecho 3.23-Linux