mfreadwrite/reader: Only attempt to copy sample buffers from responses with non-NULL samples.

For example, queueing a MF_SOURCE_READERF_ENDOFSTREAM response will set a NULL sample. This fixes a regression introduced by commit 68fa3f67.

mfreadwrite/reader: Only attempt to copy sample buffers from responses with non-NULL samples.
76db4b24 · Henri Verbeet · Alexandre Julliard · 2be95875 · 76db4b24
Commit 76db4b24 authored Aug 23, 2022 by Henri Verbeet Committed by Alexandre Julliard Aug 23, 2022
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reader.c dlls/mfreadwrite/reader.c +1 -1

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--- a/dlls/mfreadwrite/reader.c
+++ b/dlls/mfreadwrite/reader.c
@@ -958,7 +958,7 @@ static struct stream_response *media_stream_pop_response(struct source_reader *r
        if (!stream) stream = &reader->streams[response->stream_index];
-        if (stream->allocator)
+        if (response->sample && stream->allocator)
        {
            /* Return allocation error to the caller, while keeping original response sample in for later. */
            if (SUCCEEDED(hr = IMFVideoSampleAllocatorEx_AllocateSample(stream->allocator, &sample)))