Fix loadImg bug

packages/artplayer/package.json

@@ -1,6 +1,6 @@
 {
   "name": "artplayer",
-  "version": "4.0.3",
+  "version": "4.0.4",
   "expose": "Artplayer",
   "description": "ArtPlayer.js is a modern and full featured HTML5 video player",
   "main": "dist/artplayer.js",

packages/artplayer/src/events/index.js

@@ -65,8 +65,6 @@ export default class Events {
 
             this.proxy(image, 'load', () => resolve(image));
             this.proxy(image, 'error', () => reject(new ArtPlayerError(`Failed to load Image: ${image.src}`)));
-
-            return resolve(image);
         });
     }