add back else clause

Add back else clause after realizing the error check doesn't return after logging.

read.go

@@ -171,13 +171,14 @@ func updateTimelineCache(tl *localTimeline, reset bool) {
 		postsInterfaces, err := tl.m.Get()
 		if err != nil {
 			log.Error("[READ] Unable to cache posts: %v", err)
-		}
-
+		} else {
 			castPosts := postsInterfaces.([]PublicPost)
 			tl.posts = &castPosts
 		}
 	}
 
+}
+
 func showLocalTimeline(app *App, w http.ResponseWriter, r *http.Request, page int, author, tag string) error {
 	updateTimelineCache(app.timeline, false)