[PATCH] gitweb: Return or exit after done serving request

[Jakub Narebski <jnareb@gmail.com>]

Check if there is a caller in top frame of gitweb, and either 'return'
if gitweb code is wrapped in subroutine, or 'exit' if it is not.

This should avoid

  gitweb.cgi: Subroutine git_SOMETHING redefined at gitweb.cgi line NNN

warnings in error_log when running gitweb with mod_perl (using
ModPerl::Registry handler)

Signed-off-by: Jakub Narebski <jnareb@gmail.com>
---
I have noticed bunch of

  [Sun Jun 13 11:58:02 2010] gitweb.cgi: Subroutine git_opml redefined
  at /var/www/perl/gitweb/gitweb.cgi line 6808.

warnings in /var/log/httpd/error_log, after running gitweb from mod_perl.
This fixes it.

 gitweb/gitweb.perl |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/gitweb/gitweb.perl b/gitweb/gitweb.perl
index e108bbc..02f366d 100755
--- a/gitweb/gitweb.perl
+++ b/gitweb/gitweb.perl
@@ -987,7 +987,16 @@ if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
 	die_error(400, "Project needed");
 }
 $actions{$action}->();
+
 DONE_GITWEB:
+if (defined caller) {
+	# wrapped in a subroutine processing requests,
+	# e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
+	return;
+} else {
+	# pure CGI script, serving single request
+	exit;
+}
 1;
 
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