修改bug

src/views/news/addNotice.vue

@@ -61,7 +61,7 @@
               </el-upload>
               <input type="hidden" v-model="form.file">
               <span class="photo_tips">支持文件形式pdf,word,jpg,zip文件最大2M。</span>
-              <div v-if="hovering && form.file" class="delete-button" @click="handleDelete">
+              <div v-if="hovering && file" class="delete-button" @click="handleDelete">
                 <i class="el-icon-delete"></i>
               </div>
             </div>