Move empty condition in return statement

Author: apetitpa

Constraints/EmailValidator.php

@@ -138,11 +138,7 @@ public function validate($value, Constraint $constraint)
      */
     private function checkMX($host)
     {
-        if ('' === $host) {
-            return false;
-        }
-
-        return checkdnsrr($host, 'MX');
+        return ('' !== $host) && checkdnsrr($host, 'MX');
     }
 
     /**
@@ -154,10 +150,6 @@ private function checkMX($host)
      */
     private function checkHost($host)
     {
-        if ('' === $host) {
-            return false;
-        }
-
-        return $this->checkMX($host) || (checkdnsrr($host, 'A') || checkdnsrr($host, 'AAAA'));
+        return ('' !== $host) && ($this->checkMX($host) || (checkdnsrr($host, 'A') || checkdnsrr($host, 'AAAA')));
     }
 }