Fix Trait_Indexable::unindex for PHP < 5.5

library/Trait/Indexable.php

@@ -59,7 +59,8 @@ trait Trait_Indexable {
 	public function unindex() {
 		$alpha_key = $this->getAlphaKey();
 
-		if (empty($domains = $this->getDomaines())) {
+		$domains = $this->getDomaines();
+		if (empty($domains)) {
 			Class_NoticeDomain::deleteBy(['record_alpha_key' => $alpha_key,
 																		'panier_id' => 0]);
 		}