ObjFW  Diff

	@try {
		[_stream writeBuffer: buffer length: length];
	} @catch (OFWriteFailedException *e) {
		OFEnsure(e.bytesWritten <= length);

		_toWrite -= e.bytesWritten;

		if (e.errNo == EWOULDBLOCK || e.errNo == EAGAIN)
			return e.bytesWritten;

		@throw e;
	}

	_toWrite -= length;