shithub: choc

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Fix STDISK patch offset calculation.

Directions were backwards for these offsets; the STDISK lump has a -1
y offset, so we were grabbing and restoring the background from the
wrong location in the video buffer.

--- a/src/v_diskicon.c

+++ b/src/v_diskicon.c

@@ -86,8 +86,8 @@

 {

     int x, y;

-    x = loading_disk_xoffs + SHORT(disk->leftoffset);

-    y = loading_disk_yoffs + SHORT(disk->topoffset);

+    x = loading_disk_xoffs - SHORT(disk->leftoffset);

+    y = loading_disk_yoffs - SHORT(disk->topoffset);

     return I_VideoBuffer + y * SCREENWIDTH + x;

 }