Merge branch 'v5.2.3.9+' into v5.2.4+

@@ -141,6 +141,12 @@ class _BookInfoPageState extends State<BookInfoPage> {
     });
     });
   }
   }
 
 
+  @override
+  void dispose() {
+    _uploadImageProvider.firstImage = UploadImgModel();
+    super.dispose();
+  }
+
   ///获取七牛云token
   ///获取七牛云token
   ///
   ///
   _getQiniuInfo() async {
   _getQiniuInfo() async {