update vendor

vendor/github.com/garyburd/redigo/redis/conn_test.go

@@ -46,6 +46,14 @@ func dialTestConn(r io.Reader, w io.Writer) redis.DialOption {
 	})
 }
 
+type durationArg struct {
+	time.Duration
+}
+
+func (t durationArg) RedisArg() interface{} {
+	return t.Seconds()
+}
+
 var writeTests = []struct {
 	args     []interface{}
 	expected string
@@ -82,6 +90,10 @@ var writeTests = []struct {
 		[]interface{}{"SET", "key", nil},
 		"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$0\r\n\r\n",
 	},
+	{
+		[]interface{}{"SET", "key", durationArg{time.Minute}},
+		"*3\r\n$3\r\nSET\r\n$3\r\nkey\r\n$2\r\n60\r\n",
+	},
 	{
 		[]interface{}{"ECHO", true, false},
 		"*3\r\n$4\r\nECHO\r\n$1\r\n1\r\n$1\r\n0\r\n",
@@ -447,7 +459,7 @@ var dialErrors = []struct {
 		"localhost",
 		"invalid redis URL scheme",
 	},
-	// The error message for invalid hosts is diffferent in different
+	// The error message for invalid hosts is different in different
 	// versions of Go, so just check that there is an error message.
 	{
 		"redis://weird url",