From 09b861ddfb126a1ec115a3631a75d69a88b5ba8e Mon Sep 17 00:00:00 2001
From: Alex Yatskov <alex@foosoft.net>
Date: Sat, 31 Oct 2015 16:58:50 +0900
Subject: [PATCH] Initializing map

---
 file.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/file.go b/file.go
index 2c401b4..78c9fa2 100644
--- a/file.go
+++ b/file.go
@@ -52,6 +52,10 @@ func (f *file) Property(key, def string) interface{} {
 }
 
 func (f *file) SetProperty(key string, value interface{}) {
+	if f.meta == nil {
+		f.meta = make(map[string]interface{})
+	}
+
 	f.meta[key] = value
 }