One of the tests failed because in one of the paths the drive letter was
upper case `C` and in the other it was lower case `c`.
Paths in Windows are case insensitive, so this shouldn't fail. The fix
was to lower case the paths before comparison (only on Windows).
This feature was introduced to fix#874 but caused the converter to go
through a deep nested object sometimes, which made program crash on
Windows. So we have to revert the fix even though it makes a regression.
Fixesatom/atom#4904.