Undefined var in exception handling

[eby]

Mostly a bot issue but with the various things we might remove over time I'm sure some patrons run into the server error

When a bib doesn't exist it tries to deal with the exception but $bib_record i don't think exists

PHP message: Uncaught PHP Exception Error: "Attempt to assign property "_id" on null" at /var/www/aadlorg/web/modules/custom/arborcat/src/Controller/DefaultController.php line 67"

arborcat/src/Controller/DefaultController.php

Lines 52 to 68 in 00ed786

	// Get Bib Record from API
	$guzzle = \Drupal::httpClient();
	try {
	$json = json_decode($guzzle->get($get_url)->getBody()->getContents());
	if ($get_record_selector == 'harvest') {
	$bib_record = $json->bib;
	$bib_record->_id = $json->_id;
	}
	else {
	$bib_record = $json;
	}
	// Copy from Elasticsearch record id to same format as CouchDB _id
	//$bib_record->_id = $bib_record->id;
	$bib_record->id = $bib_record->_id;
	} catch (\Exception $e) {
	$bib_record->_id = NULL;
	}

[nickfreese]

PR: #201