From 4248f5cd8717eaea35eded08100714b2b2bac756 Mon Sep 17 00:00:00 2001
From: Franklin Harding <32021905+fharding1@users.noreply.github.com>
Date: Fri, 28 Jun 2019 08:33:07 -0700
Subject: [PATCH] Fix nil panic in authentication middleware example (#489)

---
 doc.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/doc.go b/doc.go
index 38957de..bd5a38b 100644
--- a/doc.go
+++ b/doc.go
@@ -295,7 +295,7 @@ A more complex authentication middleware, which maps session token to users, cou
 	r := mux.NewRouter()
 	r.HandleFunc("/", handler)
 
-	amw := authenticationMiddleware{}
+	amw := authenticationMiddleware{tokenUsers: make(map[string]string)}
 	amw.Populate()
 
 	r.Use(amw.Middleware)