ReadJpeg: Don't read past the end of the image. (#119)
ReadJpeg: Don't read past the end of the image. (#119)

This was causing HTTP cameras that didn't send content-length to skip
frames.
wpilibsuite/cscore,ThadHouse/cameraserver,wpilibsuite/cscore,wpilibsuite/cscore,ThadHouse/cameraserver,ThadHouse/cameraserver