1.fix 当loadSrc参数传入为undefined时,由于对undefined数据进行读取属性导致的crash问题

Signed-off-by: zhoulisheng1 <zhoulisheng1@huawei.com>

imageknife/src/main/ets/components/imageknife/ImageKnifeComponent.ets

@@ -251,6 +251,11 @@ export struct ImageKnifeComponent {
   }
   // imageknife 第一次启动和数据刷新后重新发送请求
   imageKnifeExecute() {
+    if(this.imageKnifeOption.loadSrc == null){
+      // 如果数据是null或者undefined 则不进入图片请求流程
+      return
+    }
+
     this.resetGifData()
     let request = new RequestOption();
     this.configNecessary(request);
@@ -624,6 +629,7 @@ export struct ImageKnifeComponent {
       if (index >= frames.length) {
         index = 0;
       }
+      // @ts-ignore
       this.gifTimerId = setTimeout(this.renderFrames.bind(this, frames, index, context, compWidth, compHeight), delayTime)
     }
   }