hgwebdir: don't allow the hidden parent of a subrepo to show as a directory Previously, if a subrepo parent had 'web.hidden=True' set, neither the parent nor child had a repository entry. However, the directory entry for the parent would be listed (it wouldn't have the fancy 'web.name' if configured), and that link went to the repo's summary page, effectively making it not hidden. This simply disables the directory processing if a valid repository is present. Whether or not the subrepo should be hidden is debatable, but this leaves that behavior unchanged (i.e. it stays hidden).