PHP 7.2 compat for absence of quoted terms #7877

Author: PowerKiKi

src/Api/Input/Operator/SearchOperatorType.php

@@ -161,7 +161,9 @@ private function parseWords(string $term): array
         $words = preg_split('/[[:space:]]+/', $termWithoutExact, -1, PREG_SPLIT_NO_EMPTY) ?: [];
 
         // Combine both list
-        array_push($words, ...$exactTerms);
+        if ($exactTerms) {
+            array_push($words, ...$exactTerms);
+        }
 
         // Drop duplicates
         $words = array_unique($words);