From 5ad9b425c3c1273d7fda175f785a1e05f98aa3c9 Mon Sep 17 00:00:00 2001
From: Julian Scheel <julian@jusst.de>
Date: Sat, 6 Feb 2010 14:38:32 +0100
Subject: Fix segfault on dispose In case of an empty nal_buffer the free
 method would run into a NULL pointer. Check for this.

---
 src/video_dec/libvdpau/nal.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/video_dec/libvdpau/nal.c b/src/video_dec/libvdpau/nal.c
index 87a2b5450..cacc21ddf 100644
--- a/src/video_dec/libvdpau/nal.c
+++ b/src/video_dec/libvdpau/nal.c
@@ -42,11 +42,13 @@ void free_nal_buffer(struct nal_buffer *nal_buffer)
 {
   struct nal_unit *nal = nal_buffer->first;
 
-  do {
-    struct nal_unit *delete = nal;
-    nal = nal->next;
-    release_nal_unit(delete);
-  } while(nal != NULL);
+  if(nal != NULL) {
+    do {
+      struct nal_unit *delete = nal;
+      nal = nal->next;
+      release_nal_unit(delete);
+    } while(nal != NULL);
+  }
 
   free(nal_buffer);
 }
-- 
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