fix: make it possible to cancel the selecting of folder when getting nhentai favorites

src/main/modules/nhentai/nhentai-ipc-controller.ts

@@ -26,6 +26,10 @@ export class NhentaiIpcController implements IIpcController {
       title: this.translator.t('Select torrent file save location'),
     });
 
+    if (result.canceled) {
+      return;
+    }
+
     const favoritesStream = await this.nhentaiApi.getFavorites();
 
     return new Promise((resolve) => {