[Koha-bugs] [Bug 31535] Fix a warn or two

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=31535

--- Comment #3 from Marcel de Rooy <m.de.rooy at rijksmuseum.nl> ---
Created attachment 140363
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https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=140363&action=edit
Bug 31535: Fix warning - uninitialized value in string ne (MARCdetail.pl)

Spotted at line 183 (older Koha version).

Test plan:
You need a NULL in the tab column of marc_subfield_structure. Hit this
page and check the logs.
This might convince you easier:
  my $tabloop=0; my $x; print "Empty string - True\n" if ( $x // q{} ) ne
$tabloop;
  print "Zero - True\n" if ( $x // '0' ) ne $tabloop;
You should only see: Empty string - True proving that defaulting to '0'
would be a game changer.

Signed-off-by: Marcel de Rooy <m.de.rooy at rijksmuseum.nl>

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