fix one bug

helper/refill/policy/channel_filter.php

@@ -204,7 +204,7 @@ class channel_filter
             foreach ($ch_infos as $name => $item)
             {
                 [$fails, $succs] = $ch_times->get_times($name);
-                if($item['fail'] >= 0 or $item['succ'] >= $fails) {
+                if($item['fail'] > 0 or $item['succ'] >= $fails) {
                     $fail[] = $name;
                 }
                 elseif($item['succ'] >= $succs) {