fix typo

Author: staabm

tests/default/data/pdo.php

@@ -234,8 +234,8 @@ public function taintStaticEscaped(PDO $pdo, string $s)
 
     public function taintEscaped(PDO $pdo, string $s)
     {
-        $escapeer = new Escaper();
-        $stmt = $pdo->query('SELECT email, adaid FROM ada WHERE adaid='.$escapeer->escape($s), PDO::FETCH_ASSOC);
+        $escaper = new Escaper();
+        $stmt = $pdo->query('SELECT email, adaid FROM ada WHERE adaid='.$escaper->escape($s), PDO::FETCH_ASSOC);
         assertType('PDOStatement<array{email: string, adaid: int<-32768, 32767>}>', $stmt);
     }
 }