Don't crash if another dialog is added while finishing.
Don't crash if another dialog is added while finishing.

hrydgard/native,unknownbrackets/native,unknownbrackets/native,unknownbrackets/native,zhykzhykzhyk/ppsspp-native,zhykzhykzhyk/ppsspp-native,zhykzhykzhyk/ppsspp-native,libretro/ppsspp-native,unknownbrackets/native,libretro/ppsspp-native,libretro/ppsspp-native,hrydgard/native,zhykzhykzhyk/ppsspp-native,libretro/ppsspp-native,hrydgard/native,hrydgard/native