Eliminate redundancy

Author: mhartl

app/controllers/microposts_controller.rb

@@ -17,7 +17,7 @@ def create
   def destroy
     @micropost.destroy
     flash[:success] = "Micropost deleted"
-    if request.referrer.nil? || request.referrer == microposts_url
+    if request.referrer.nil?
       redirect_to root_url, status: :see_other
     else
       redirect_to request.referrer, status: :see_other