Use non-Yoda null comparison to satisfy coding standard

Author: ardittirana

src/Utils/Misc.php

@@ -68,7 +68,7 @@ public static function getAliases($statement, $database)
                 ];
             }
 
-            if (null === $expr->alias || $expr->alias === '') {
+            if ($expr->alias === null || $expr->alias === '') {
                 continue;
             }