From 2db473fda414d32872ed2b460fdf271ec87c00da Mon Sep 17 00:00:00 2001
From: Robin Watts <robin.watts@artifex.com>
Date: Mon, 3 Sep 2012 19:44:08 +0100
Subject: Tweak fz_keep_stream to cope with NULL.

Simplifies coding.
---
 fitz/stm_open.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fitz/stm_open.c b/fitz/stm_open.c
index 3d605e1a..f3d78b9d 100644
--- a/fitz/stm_open.c
+++ b/fitz/stm_open.c
@@ -42,7 +42,8 @@ fz_new_stream(fz_context *ctx, void *state,
 fz_stream *
 fz_keep_stream(fz_stream *stm)
 {
-	stm->refs ++;
+	if (stm)
+		stm->refs ++;
 	return stm;
 }
 
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