Code review comment for lp:~jamesh/thumbnailer/no-fallback-albumart

Oops, it's the QML test that writes to $HOME.

OK, I wasn't sure of this, so endian-ness is not the problem here.

I compiled this on the powerpc porter box, and we are getting 0,0,0,0 back each and every time, so the problem is below the qml level somewhere. I'll have another look tomorrow.

This MR looks fine to me, thanks!