修改上传回退的bug

@@ -75,12 +75,14 @@ export default {
 					sessionStorage.removeItem(key);
 					try {
 						let d = JSON.parse(str);
+						d.showMask = false;
 						this.images.push(d);
 					} catch (e) {
 						console.error(e);
 					}
 				}
 			}
+			this.uploadFiles = this.images.length;
 		},
 		cacheData() {
 			for (let index = 0; index < this.images.length; index++) {