message: [bugfix] Cell: icon can't render when no title
diff: }"
  @click="onClick"
  >
  - <div class="van-cell__title" v-if="$slots.title || title">
  + <div class="van-cell__title" v-if="title || icon || $slots.title || $slots.icon">
  <slot name="icon">
  <icon v-if="icon" :name="icon" />
  </slot>
  