ffprobe: fix NULL pointer dereference in writer_close()

Fix crash.

ffprobe: fix NULL pointer dereference in writer_close()
Fix crash.
49c207b8 · Stefano Sabatini · 9ac58ba1 · 49c207b8
Commit 49c207b8 authored Jan 05, 2012 by Stefano Sabatini
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Showing with 4 additions and 2 deletions

ffprobe.c ffprobe.c +4 -2

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--- a/ffprobe.c
+++ b/ffprobe.c
@@ -178,9 +178,11 @@ static const AVClass writer_class = {

 static void writer_close(WriterContext **wctx)
 {
-    if (*wctx && (*wctx)->writer->uninit)
-        (*wctx)->writer->uninit(*wctx);
+    if (!*wctx)
+        return;

+    if ((*wctx)->writer->uninit)
+        (*wctx)->writer->uninit(*wctx);
    av_freep(&((*wctx)->priv));
    av_freep(wctx);
 }