!391 修改重置表单bug

Merge pull request !391 from 18297093310/jieoschina-master-patch-51652

@@ -128,7 +128,7 @@
             </el-form-item>
             </el-form-item>
           </el-col>
           </el-col>
           <el-col :span="24" v-if="form.menuType != 'F'">
           <el-col :span="24" v-if="form.menuType != 'F'">
-            <el-form-item label="菜单图标">
+            <el-form-item label="菜单图标" prop="icon">
               <el-popover
               <el-popover
                 placement="bottom-start"
                 placement="bottom-start"
                 width="460"
                 width="460"