Merge branch 'master' into ndyakov/token-based-auth

redis.go

@@ -736,6 +736,9 @@ type Client struct {
 
 // NewClient returns a client to the Redis Server specified by Options.
 func NewClient(opt *Options) *Client {
+	if opt == nil {
+		panic("redis: NewClient nil options")
+	}
 	opt.init()
 
 	c := Client{