Qt: Fix printing race conditions
Qt: Fix printing race conditions

mgba-emu/mgba,Anty-Lemon/mgba,libretro/mgba,libretro/mgba,libretro/mgba,Iniquitatis/mgba,libretro/mgba,Anty-Lemon/mgba,mgba-emu/mgba,libretro/mgba,Iniquitatis/mgba,mgba-emu/mgba,Anty-Lemon/mgba,mgba-emu/mgba,Anty-Lemon/mgba,Iniquitatis/mgba,Iniquitatis/mgba