V_PERPLAYER improvements for fullscreen V_DrawFill
V_DrawFill fills the entire screen when given a 320x200 area... except when using V_PERPLAYER for it while in split-screen. In that case, the borders could be unfilled in non-green resolutions.
This merge request fixes that. I've tested this with both the software and the OpenGL renderers, using the Hide & Seek "blindfold" fill for testing.
The diff is only as large as it is because that I indented a lot of existing lines with 1 extra tab, due to putting them in a new "else" block.
Before:
After:
Edited by Zwip-Zwap Zapony