fixed #142

尼玛，写反了。。。

var/Typecho/Validate.php

@@ -110,7 +110,8 @@ class Typecho_Validate
         // Cycle through the rules and test for errors
         foreach ($rules as $key => $rules) {
             $this->_key = $key;
-            $data[$key] = (0 == strlen($data[$key])) ? NULL : $data[$key];
+            $data[$key] = (is_array($data[$key]) ? 0 == count($data[$key])
+                : 0 == strlen($data[$key])) ? NULL : $data[$key];
 
             foreach ($rules as $params) {
                 $method = $params[0];

var/Widget/Options/General.php

@@ -148,7 +148,7 @@ class Widget_Options_General extends Widget_Abstract_Options implements Widget_I
         }
 
         $settings = $this->request->from('title', 'siteUrl', 'description', 'keywords', 'allowRegister', 'timezone', 'attachmentTypes');
-        $settings['siteUrl'] = rtrim('/', $settings['siteUrl']);
+        $settings['siteUrl'] = rtrim($settings['siteUrl'], '/');
 
         $attachmentTypes = array();
         if ($this->isEnableByCheckbox($settings['attachmentTypes'], '@image@')) {