From 61950817fa56c1cfeb5f8043c2f0975d2f8a1e90 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 4 Mar 2018 22:18:14 +0900
Subject: [PATCH] audio: Bug fix: importing audio without NewContext causes
 error

---
 audio/audio.go | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/audio/audio.go b/audio/audio.go
index 80af9b338..ef3629bb2 100644
--- a/audio/audio.go
+++ b/audio/audio.go
@@ -167,9 +167,14 @@ var (
 
 func init() {
 	hooks.AppendHookOnUpdate(func() error {
-		theContext.m.Lock()
-		err := theContext.err
-		theContext.m.Unlock()
+		var err error
+		theContextLock.Lock()
+		if theContext != nil {
+			theContext.m.Lock()
+			err = theContext.err
+			theContext.m.Unlock()
+		}
+		theContextLock.Unlock()
 		return err
 	})
 }