https://gitlab.synchro.net/main/sbbs/-/commit/b6062fa38882d4e96f31772c
Modified Files:
	src/sbbs3/putnode.cpp
Log Message:
More nodefile_mutex fixes

Need to unlock the mutex before calling errormsg().

Need unlock the mutex in error path of unlocknodedat().

I'm not clear why this would, but it might resolve CID 515601 which looks
like false positive to me: getnmsg()->putnodedat() should never leave
nodefile_mutex locked.
--- SBBSecho 3.23-Linux