404 Redirected patch

Index: wp-content/plugins/404-redirected/includes/admin.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- wp-content/plugins/404-redirected/includes/admin.php    (date 1354538649000)
+++ wp-content/plugins/404-redirected/includes/admin.php    (revision )
@@ -1266,7 +1266,10 @@
        $rows = wbz404_getLogRecords($tableOptions);
        $displayed = 0;
        $y=1;
-       date_default_timezone_set(get_option('timezone_string'));
+       $timezone_string = get_option('timezone_string');
+       if ($timezone_string) {
+           date_default_timezone_set($timezone_string);
+       }
        foreach ($rows as $row) {
            $class = "";
            if ($y == 0) {
@@ -1492,7 +1495,10 @@
    $columns['last_used']['orderby'] = "";
    $columns['last_used']['width'] = "10%";

-   date_default_timezone_set(get_option('timezone_string'));
+   $timezone_string = get_option('timezone_string');
+   if ($timezone_string) {
+       date_default_timezone_set($timezone_string);
+   }

    echo "<div class=\"tablenav\">";
        wbz404_drawPaginationLinks($sub, $tableOptions);
@@ -1797,8 +1803,10 @@
    $columns['last_used']['orderby'] = "";
    $columns['last_used']['width'] = "20%";

-   date_default_timezone_set(get_option('timezone_string'));
-
+   $timezone_string = get_option('timezone_string');
+   if ($timezone_string) {
+       date_default_timezone_set($timezone_string);
+   }

    echo "<div class=\"tablenav\">";
        wbz404_drawPaginationLinks($sub, $tableOptions);