reinoud 1351706593 Fix a few race conditions ... the VSYNC update flag could be cleared
resulting in a blank screen when f.e. a setcursor ioctl was called
after the screenblanker had enabled the screen again ... the actual
switching on was then never performed at VSYNC.

A simple |= instead of = does the trick ... just leave the other bits
on please :)
2001-04-20 11:53:06 +00:00
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