Rémi Bernon : mfreadwrite/reader: Avoid accessing an invalid stream index.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e3510c6bdb85273fb186d97377b5cb46644c36c0
URL:    https://gitlab.winehq.org/wine/wine/-/commit/e3510c6bdb85273fb186d97377b5cb4...

Author: Rémi Bernon 
Date:   Wed Mar 27 11:02:24 2024 +0100

mfreadwrite/reader: Avoid accessing an invalid stream index.

Fixes d6c9ac94d2fc92d86639e74699ef470b1d8a9861.

---

dlls/mfreadwrite/reader.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/dlls/mfreadwrite/reader.c b/dlls/mfreadwrite/reader.c
index 252e0c1f51c..873eac959f1 100644
--- a/dlls/mfreadwrite/reader.c
+++ b/dlls/mfreadwrite/reader.c
@@ -2365,7 +2365,6 @@ static HRESULT WINAPI src_reader_GetServiceForStream(IMFSourceReaderEx *iface, D
         REFIID riid, void **object)
 {
     struct source_reader *reader = impl_from_IMFSourceReaderEx(iface);
-    struct media_stream *stream = &reader->streams[index];
     IUnknown *obj = NULL;
     HRESULT hr = S_OK;

@@ -2386,7 +2385,7 @@ static HRESULT WINAPI src_reader_GetServiceForStream(IMFSourceReaderEx *iface, D

if (index >= reader->stream_count)
                 hr = MF_E_INVALIDSTREAMNUMBER;
-            else if (!(obj = (IUnknown *)stream->transform_service))
+            else if (!(obj = (IUnknown *)reader->streams[index].transform_service))
                 hr = E_NOINTERFACE;
             break;
     }