gitweb problem?

Whenever I view the toplevel gitweb page (running as a cgi script under apache), but not when in a specific repo, I get this in my error log:

gitweb.cgi: Use of uninitialized value $git_dir in concatenation (.) or string at /home/git/gitweb/gitweb.cgi line 2065. fatal: error processing config file(s) gitweb.cgi: Use of uninitialized value $git_dir in concatenation (.) or string at /home/git/gitweb/gitweb.cgi line 2221. gitweb.cgi: Use of uninitialized value $git_dir in concatenation (.) or string at /home/git/gitweb/gitweb.cgi line 2218.

(taken verbatim from the apache error log, removed uninteresting line prefixes.)

I'm using the pathinfo option, so perhaps there is a problem with that setup?

Looking at the source, the last two line numbers are in `git_get_project_config' -- so my guess is that the code is trying to get the options from the repository config file even when showing the toplevel page. Based on this, and also guessing that $git_dir is unset when viewing the toplevel page, I added

	return unless (defined $git_dir);

to the top (of the `git_get_project_config' function), and I get no warnings and everything works as it should.

(Disclaimer: I can barely read perl, and I'm a git newbie, so all of this can be due to some other stupid mistake.)