Mission briefings are no longer read from mission(1).ini

[Crimsonum]

As far as I can interpret /src/briefing_restate_map_file.asm, this patch should find and display the mission briefing text from mission.ini (or mission1.ini if Firestorm) if no [Briefing] section is found in the mission map file itself. However, this doesn't work. If there's no [Briefing] section in the map file, an empty briefing is displayed in-game.

If I build the game.exe without this patch, the game is still unable to read briefings from mission(1).ini.