refs #14448 [patch] - fixes null type error

* for $holding['locationid'] at finc/templates/RecordTab/holdingils.phtml

themes/finc/templates/RecordTab/holdingsils.phtml

@@ -98,7 +98,9 @@ if (!empty($holdingTitleHold)): ?>
 
   <? /* finc: this next section produces an empty table in some cases - the table borders collapse, producing a thick line - should be solved more elegantly - Fixme - CK*/ ?>
   <? /* nxt line = finc-specific - branch info - CK */ ?>
-  <?=$this->branchInfo($this->driver)->getBranchInfo($holding['locationid']);?>
+  <? if (isset($holding['locationid'])): ?>
+    <?=$this->branchInfo($this->driver)->getBranchInfo($holding['locationid']);?>
+  <? endif; ?>
   <table class="table table-striped">
     <? /* Table summary not supported in html 5, finc-specific solution, CK */ ?>
     <caption class="sr-only"><?=$this->transEsc('holdings_details_from', ['%%location%%' => $this->transEsc($holding['location'])]) ?></caption>