Added patch to set stream to NULL if AVIFileGetStream fails with an error.

patches/avifil32-AVIFileGetStream/0001-avifil32-AVIFileGetStream-should-set-stream-to-NULL-.patch

@@ -0,0 +1,42 @@
+From 64ce8c391c3706a2b3ce9b5f8f76710d5751a766 Mon Sep 17 00:00:00 2001
+From: Dmitry Timoshkov <dmitry@baikal.ru>
+Date: Thu, 20 Oct 2016 17:48:24 +0800
+Subject: avifil32: AVIFileGetStream should set stream to NULL in case of an
+ error.
+
+---
+ dlls/avifil32/avifile.c   | 1 +
+ dlls/avifil32/tests/api.c | 5 +++++
+ 2 files changed, 6 insertions(+)
+
+diff --git a/dlls/avifil32/avifile.c b/dlls/avifil32/avifile.c
+index f649d05..7a4caaa 100644
+--- a/dlls/avifil32/avifile.c
++++ b/dlls/avifil32/avifile.c
+@@ -316,6 +316,7 @@ static HRESULT WINAPI IAVIFile_fnGetStream(IAVIFile *iface, IAVIStream **avis, D
+   }
+ 
+   /* Sorry, but the specified stream doesn't exist */
++  *avis = NULL;
+   return AVIERR_NODATA;
+ }
+ 
+diff --git a/dlls/avifil32/tests/api.c b/dlls/avifil32/tests/api.c
+index b3d822d..8a00865 100644
+--- a/dlls/avifil32/tests/api.c
++++ b/dlls/avifil32/tests/api.c
+@@ -373,6 +373,11 @@ static void test_default_data(void)
+     res = AVIFileOpenA(&pFile, filename, OF_SHARE_DENY_WRITE, 0L);
+     ok(res == 0, "Unable to open file: error=%u\n", res);
+ 
++    pStream0 = (void *)0xdeadbeef;
++    res = AVIFileGetStream(pFile, &pStream0, ~0, 0);
++    ok(res == AVIERR_NODATA, "expected AVIERR_NODATA, got %#x\n", res);
++    ok(pStream0 == NULL, "AVIFileGetStream should set stream to NULL\n");
++
+     res = AVIFileGetStream(pFile, &pStream0, 0, 0);
+     ok(res == 0, "Unable to open video stream: error=%u\n", res);
+ 
+-- 
+2.9.0
+

patches/avifil32-AVIFileGetStream/definition

@@ -0,0 +1 @@
+Fixes: [41579] AVIFileGetStream should set stream to NULL in case of an error