[PATCH 1/2] mfreadwrite: Output warning for uninitialized stream descriptor.

[Nikolay Sivov]

Signed-off-by: Nikolay Sivov 
---
 dlls/mfreadwrite/main.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/dlls/mfreadwrite/main.c b/dlls/mfreadwrite/main.c
index fd9062f648..7625669ddb 100644
--- a/dlls/mfreadwrite/main.c
+++ b/dlls/mfreadwrite/main.c
@@ -727,7 +727,13 @@ static DWORD reader_get_first_stream_index(IMFPresentationDescriptor *descriptor
             {
                 hr = IMFMediaTypeHandler_GetMajorType(handler, &guid);
                 IMFMediaTypeHandler_Release(handler);
-                if (SUCCEEDED(hr) && IsEqualGUID(&guid, major))
+                if (FAILED(hr))
+                {
+                    WARN("Failed to get stream major type, hr %#x.\n", hr);
+                    continue;
+                }
+
+                if (IsEqualGUID(&guid, major))
                 {
                     return i;
                 }