Bug 15416: Warns on guided_reports.pl

Initialising $phase variable to be '' if not defined.

To test:
1) Go to Reports -> Guided Reports Wizard
2) Notice warns
3) Apply patch
4) Refresh page
5) Confirm warns are gone and page still works as it should

Signed-off-by: Hector Castro <hector.hecaxmmx@gmail.com>
Warns are gone. Page still works as expected

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Amended patch:
-my $phase = $input->param('phase');
-$phase //= '';
+my $phase = $input->param('phase') // '';

Signed-off-by: Brendan Gallagher brendan@bywatersolutions.com
(cherry picked from commit 17c7c685f1)
Signed-off-by: Julian Maurice <julian.maurice@biblibre.com>
(cherry picked from commit fef0f0c367)
Signed-off-by: Frédéric Demians <f.demians@tamil.fr>

reports/guided_reports.pl

@@ -48,7 +48,7 @@ Script to control the guided report creation
 my $input = new CGI;
 my $usecache = C4::Context->ismemcached;
 
-my $phase = $input->param('phase');
+my $phase = $input->param('phase') // '';
 my $flagsrequired;
 if ( $phase eq 'Build new' or $phase eq 'Delete Saved' ) {
     $flagsrequired = 'create_reports';