effects/screenshot: Use more FileDescriptor
It helps to express the ownership of the pipe fd in ScreenShotSinkPipe2 better.
ScreenShotSinkPipe2 is not made to take a FileDescriptor too because it's complicated by CaptureInteractive().
It helps to express the ownership of the pipe fd in ScreenShotSinkPipe2 better.
ScreenShotSinkPipe2 is not made to take a FileDescriptor too because it's complicated by CaptureInteractive().