https://gitlab.synchro.net/main/sbbs/-/commit/5f593b884b68d7452ec8a7f6
Modified Files:
	src/smblib/smbstr.c
Log Message:
Fix small negative UTC-offset output from smb_zonestr()

When passed values between (-1 and -59), this function would output something
nonsensical like: "UTC0:01" or "UTC0:59". Now we'll make sure there's a minus
sign in these conditions (e.g. "UTC-0:01" and "UTC-0:59").
--- SBBSecho 3.23-Linux