From 525bdd1429337c57a2830c4c634d454e3493a4c1 Mon Sep 17 00:00:00 2001
From: Sean Bright <sean@malleable.com>
Date: Fri, 29 Jul 2011 16:58:08 +0000
Subject: [PATCH] Only write to wav files that were opened to be written to.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@330203 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 formats/format_wav.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/formats/format_wav.c b/formats/format_wav.c
index f8f8a9cf54..023cd40376 100644
--- a/formats/format_wav.c
+++ b/formats/format_wav.c
@@ -340,6 +340,10 @@ static void wav_close(struct ast_filestream *s)
 	char zero = 0;
 	struct wav_desc *fs = (struct wav_desc *)s->_private;
 
+	if ((s->mode & O_RDONLY) == O_RDONLY) {
+		return;
+	}
+
 	if (s->filename) {
 		update_header(s->f);
 	}