Merge pull request #4 from XiaoLin0815/patch-1

修复output变量拼接前未定义的错误

Author: Netrvin

domains.php

@@ -7,6 +7,8 @@
 $r=$cloudflare->user_lookup();
 
 include_once("header.php");
+
+$output = '';
 ?>
 
 <div style="margin-top:25px" class="mdui-container">
@@ -150,4 +152,4 @@ function delete_domain(domain) {
 }
 
 include_once("footer.php");
-?>
+?>