优化一个小判断

src/views/dashboard/index.vue

@@ -23,7 +23,7 @@
       </div>
     </div>
     <div id="player-container" class="player" ref="player-container">
-      <MyVideo ref="my-video" v-if="width > 0 && videoUrl" :src="videoUrl" :width="width" />
+      <MyVideo ref="my-video" v-if="width > 0 " :src="videoUrl" :width="width" />
     </div>
     <div class="video-list">
       <div class="title">犬只记录</div>