KDirOperator: on first show, don't display files in dir-only mode
when KFile::Directory mode changes, we need to update the dir, otherwise initially we would be showing dirs and files even when dirOnlyMode() is true.
Edited by Fabian Vogt
when KFile::Directory mode changes, we need to update the dir, otherwise initially we would be showing dirs and files even when dirOnlyMode() is true.