ObjFW  Diff

- (int)fileDescriptorForWriting
{
	return _writePipe[1];
}

- (void)closeForWriting
{
	if (_writePipe[1] != -1)
		close(_writePipe[1]);
	if (_readPipe[0] == -1 || _writePipe[1] == -1)
		@throw [OFNotOpenException exceptionWithObject: self];

	close(_writePipe[1]);

	_writePipe[1] = -1;
}

- (void)close
{
	if (_readPipe[0] == -1)