RomFS is always encrypted when rebuilding NCCH files

[mnml]

I've been trying to rebuild a game with a translation patch for use in Citra, but the RomFS region always comes out encrypted, no matter what flags I use when rebuilding the CXI (including --not-encrypt).

After peeking at the source code, I noticed this:

3dstool/src/ncch.cpp

Lines 966 to 969 in 3cb0ebd

	if (m_nEncryptMode == kEncryptModeNone)
	{
	CopyFile(m_fpNcch, fp, 0, nFileSize);
	}

I think that if statement always fails, because:

3dstool/src/3dstool.cpp

Lines 218 to 221 in 3cb0ebd

	if (m_nEncryptMode == CNcch::kEncryptModeNone)
	{
	m_nEncryptMode = CNcch::kEncryptModeAuto;
	}

Unless there's something else I'm missing?