fix setup db_connect_with_errors PDO exceptions were not caught

functions.inc.php

@@ -1495,6 +1495,7 @@ function db_connect_with_errors() {
         die("<p style='color: red'>FATAL Error:<br />Invalid \$CONF['database_type']! Please fix your config.inc.php!</p>");
     }
 
+    try {
         if ($username_password) {
             $link = new PDO($dsn, Config::read_string('database_user'), Config::read_string('database_password'), $options);
         } else {
@@ -1506,7 +1507,10 @@ function db_connect_with_errors() {
                 $link->exec($q);
             }
         }
-
+    } catch (PDOException $e) {
+        $error_text = 'PDO exception: '. $e->getMessage();
+        error_log($error_text);
+    }
 
     return array($link, $error_text);
 }