Bug 21105: (QA follow-up) Silence warning because of tests setup

The tests are using 'http://localhost' and the regex is setting $baseURL
to empty in this case. It works on the oai.pl front-end.

This patch changes the regex.

To test:
1. Run:
   $ kshell
  k$ t/db_dependent/OAI/Server.t
=> FAIL: Boo! Warning!
2. Apply this patch
3. Repeat 2
=> SUCCESS: Oh, cool. No warning :-D
4. Sign off :-D

Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>

Koha/OAI/Server/Identify.pm

@@ -28,7 +28,10 @@ use base ("HTTP::OAI::Identify");
 sub new {
     my ($class, $repository) = @_;
 
-    my ($baseURL) = $repository->self_url() =~ /(.*)\?.*/;
+    my $baseURL = $repository->self_url();
+    $baseURL = $+{base_url}
+        if $baseURL =~ m/(?<base_url>.*)\?.*/;
+
     my $self = $class->SUPER::new(
         baseURL             => $baseURL,
         repositoryName      => C4::Context->preference("LibraryName"),