修复一处bug

application/admin/controller/User.php

@@ -204,7 +204,7 @@ class User extends Admin {
 			return $this->error('密码不正确');
 		}
 
-		$Member = model('User');
+		$Member = model('Member');
 		$data   = $Member->create(array('nickname' => $nickname));
 		if (!$data) {
 			return $this->error($Member->getError());
@@ -229,7 +229,7 @@ class User extends Admin {
 	 */
 	public function editpwd() {
 		if ($this->request->isPost()) {
-			$user = model('User');
+			$user = model('Member');
 			$data = $this->request->post();
 
 			$res = $user->editpw($data);