- Patch #843656 by Pasqualle: duplicated code line. Easiest patch of the day.

includes/install.core.inc

@@ -1548,7 +1548,6 @@ function install_check_requirements($install_state) {
       // Check to make sure a settings.php already exists.
       $file = $settings_file;
       if (drupal_verify_install_file($settings_file, FILE_EXIST)) {
-        $exists = TRUE;
         // If it does, make sure it is writable.
         $writable = drupal_verify_install_file($settings_file, FILE_READABLE|FILE_WRITABLE);
         $exists = TRUE;