Fix app-routing

src/app/create-comment/create-comment.component.ts

@@ -45,7 +45,7 @@ export class CreateCommentComponent implements OnInit {
       subject: subject,
       body: body,
       creationTimestamp: new Date(Date.now())
-    } as Comment).subscribe(room => {
+    } as Comment).subscribe(() => {
       this.router.navigate([`/participant/room/${this.room.id}`]);
       this.notification.show(`Comment '${subject}' successfully created.`);
     });