修复上传插件chrome移除文件无反应的bug

src/main/webapp/static/global/plugins/bootstrap-fileupload/js/bootstrap-fileupload.js

@@ -100,7 +100,7 @@
       this.$input.attr('name', '')
 
       //ie8+ doesn't support changing the value of input with type=file so clone instead
-      if($.browser.msie){
+      if($.browser&&$.browser.msie){
           var inputClone = this.$input.clone(true);
           this.$input.after(inputClone);
           this.$input.remove();