Fix a bug where the SDLRPCResponseDispatcher could crash when being cleared
Fix a bug where the SDLRPCResponseDispatcher could crash when being cleared

FordDev/sdl_ios,APCVSRepo/sdl_ios,kshala-ford/sdl_ios,FordDev/sdl_ios,smartdevicelink/sdl_ios,APCVSRepo/sdl_ios,kshala-ford/sdl_ios,APCVSRepo/sdl_ios,APCVSRepo/sdl_ios,kshala-ford/sdl_ios,smartdevicelink/sdl_ios,FordDev/sdl_ios,smartdevicelink/sdl_ios,kshala-ford/sdl_ios,smartdevicelink/sdl_ios,FordDev/sdl_ios,FordDev/sdl_ios,smartdevicelink/sdl_ios,APCVSRepo/sdl_ios,kshala-ford/sdl_ios