Fix count() test error shown by move to PHP7.4

- As of PHP 7.2.0 count() yields a warning on invalid countable types passed to the value parameter.

tests/doctrine/DoctrineCleanInsert1Test.php

@@ -199,17 +199,17 @@ public function testShowDoctrineReadFailiureUntilCommitted()
     {
         print __METHOD__ . "\n";
         $n = 1;
-      // create a new site and persist (but do not flush yet)
+        // create a new site and persist (but do not flush yet)
         $site = TestUtil::createSampleSite('site' . $n/*, 'pk' . $n*/);
         $this->em->beginTransaction();
         $this->em->persist($site);
-      // After persist, Doctrine querying does not return our site until we flush, hence we get 0
-      // returned from our repository.
-        $this->assertEquals(0, count($this->em->getRepository('Site')->findOneBy(array('shortName' => 'site' . $n))));
-      // When we flush or commit we get one.
+        // After persist, Doctrine querying does not return our site until we flush, hence we get 0
+        // returned from our repository.
+        $this->assertEquals(0, count($this->em->getRepository('Site')->findBy(array('shortName' => 'site' . $n))));
+        // When we flush or commit we get one.
         $this->em->commit();
         $this->em->flush();
-        $this->assertEquals(1, count($this->em->getRepository('Site')->findOneBy(array('shortName' => 'site' . $n))));
+        $this->assertEquals(1, count($this->em->getRepository('Site')->findBy(array('shortName' => 'site' . $n))));
     }