[fix]解决会员页返回报错的问题

lib/module/member/member_page.dart

@@ -62,6 +62,9 @@ class MemberPage extends BasePage<MemberController> {
           return PopScope(
       canPop: false,
       onPopInvokedWithResult: (bool didPop, dynamic result) async {
+        if (didPop) {
+          return;
+        }
         controller.onPopBack();
       },
       child: Stack(