Fix bug #1799027; fix a GDI handle leak in lbitblock that resulted in very strange behavior followed by an access violation when playing tetrads.lgo.
This is important enough to warrent doing a minor release, so I've rolled the version back from 6.17.0 to 6.16.1.
Authored by: david_costanzo 2007-09-21
Parent: [r2444]
Child: [r2446]
