From 360328b8c6f554b0ee68df4a5557967122e35a10 Mon Sep 17 00:00:00 2001
From: ikawaha <ikawaha@users.noreply.github.com>
Date: Mon, 2 Mar 2015 23:18:27 +0900
Subject: [PATCH] Fixed a bug that panic occurs when the value is null

---
 postgres.go | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/postgres.go b/postgres.go
index 994ed9b8..496ee626 100644
--- a/postgres.go
+++ b/postgres.go
@@ -106,7 +106,12 @@ func (h Hstore) Value() (driver.Value, error) {
 	}
 
 	for key, value := range h {
-		hstore.Map[key] = sql.NullString{String: *value, Valid: true}
+		var s sql.NullString
+		if value != nil {
+			s.String = *value
+			s.Valid = true
+		}
+		hstore.Map[key] = s
 	}
 	return hstore.Value()
 }