GBA Context: Fix waiting on frames
GBA Context: Fix waiting on frames

mgba-emu/mgba,libretro/mgba,MerryMage/mgba,iracigt/mgba,Iniquitatis/mgba,fr500/mgba,Anty-Lemon/mgba,askotx/mgba,askotx/mgba,AdmiralCurtiss/mgba,AdmiralCurtiss/mgba,fr500/mgba,jeremyherbert/mgba,MerryMage/mgba,iracigt/mgba,Touched/mgba,AdmiralCurtiss/mgba,sergiobenrocha2/mgba,Iniquitatis/mgba,mgba-emu/mgba,libretro/mgba,iracigt/mgba,libretro/mgba,sergiobenrocha2/mgba,mgba-emu/mgba,Anty-Lemon/mgba,fr500/mgba,libretro/mgba,jeremyherbert/mgba,mgba-emu/mgba,MerryMage/mgba,sergiobenrocha2/mgba,askotx/mgba,jeremyherbert/mgba,iracigt/mgba,askotx/mgba,sergiobenrocha2/mgba,Touched/mgba,fr500/mgba,libretro/mgba,Iniquitatis/mgba,Anty-Lemon/mgba,Touched/mgba,Iniquitatis/mgba,jeremyherbert/mgba,Anty-Lemon/mgba,sergiobenrocha2/mgba