fish: Fix STAT /
KIO::stat("fish://localhost") returned a "regular file" with a MIME type of "inode/directory". This is because it did chdir("/") and then lstat(""). Fix this by using "." instead of an empty string in that case.
KIO::stat("fish://localhost") returned a "regular file" with a MIME type of "inode/directory". This is because it did chdir("/") and then lstat(""). Fix this by using "." instead of an empty string in that case.