优化版本对比机制

src/main/utils/autoUpdate.js

@@ -88,7 +88,7 @@ module.exports = isFirstCheckedUpdate => {
   })
   autoUpdater.on('update-not-available', info => {
     sendStatusToWindow('Update not available.')
-    handleSendEvent({ type: 'update-not-available' })
+    handleSendEvent({ type: 'update-not-available', info })
   })
   autoUpdater.on('error', err => {
     sendStatusToWindow('Error in auto-updater.')

src/renderer/App.vue

@@ -160,11 +160,13 @@ export default {
           this.showUpdateModal()
         })
       })
-      rendererOn('update-not-available', () => {
+      rendererOn('update-not-available', (e, info) => {
         this.clearUpdateTimeout()
         this.setNewVersion({
-          version: this.version.version,
+          version: info.version,
+          desc: info.releaseNotes,
         })
+        this.setVersionModalVisible({ isLatestVer: true })
       })
       // 更新超时定时器
       this.updateTimeout = setTimeout(() => {