Stats about changes on a file were not reported correctly
for files that where moved to a subdirectory. They
were reported as an invalid entry and without
action associated.

For example, the file `dir/filename` was moved to
`dir/subdir/filename`, but it was reported as `dir//filename`.
Therefore, the entry of the file `dir/subdire/filename`
didn't have the stats about added and deleted lines.
This error has been fixed and stats are reported correctly.

Signed-off-by: Santiago Dueñas <[email protected]>

This commit tries to fix the problems we have
with coveralls. It fails and the tests don't
pass on GitHub Actions.

Signed-off-by: Santiago Dueñas <[email protected]>