Reverted revision 3075.

Revision 3075 was wrong, the only thing it "fixed" was also
fixed by rev 3076.
This fix the "black pixels" regression in Nights without
breaking Shining Force 3.

git-svn-id: https://yabause.svn.sourceforge.net/svnroot/yabause/trunk@3106 d7be59e3-070e-4b9a-85a1-4646befae34d