LP2043045 - Stop Log Noise - QueryParser.pm pullup()

LP2043045 - Stop Log Noise - QueryParser.pm pullup()

Silence some "Use of uninitialized value" warnings the pop up with
every catalog search.

Look for these log entries before the fix after performing some catalog searches.

Use of uninitialized value in string eq at
/usr/local/share/perl/5.36.0/OpenILS/Application/Storage/QueryParser.pm line 1626.

Use of uninitialized value in addition (+) at
/usr/local/share/perl/5.36.0/OpenILS/Application/Storage/QueryParser.pm line 1661

After the fix is applied, no more should be generated.

Release-note: Silences some "Use of uninitialized value" log entries from catalog search

Signed-off-by: Josh Stompro <stomproj@larl.org>
Signed-off-by: Jason Boyer <JBoyer@equinoxOLI.org>
Signed-off-by: Galen Charlton <gmc@equinoxOLI.org>