Merge branch 'hb/gitweb-project-list'

When a directory is not readable, "gitweb" fails to build the
project list.  Work this around by skipping such a directory.

* hb/gitweb-project-list:
  gitweb: skip unreadable subdirectories

Author: gitster

gitweb/gitweb.perl

@@ -3071,6 +3071,8 @@ sub git_get_projects_list {
 				return if (m!^[/.]$!);
 				# only directories can be git repositories
 				return unless (-d $_);
+				# need search permission
+				return unless (-x $_);
 				# don't traverse too deep (Find is super slow on os x)
 				# $project_maxdepth excludes depth of $projectroot
 				if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {