quartz: Ensure pSample is NULL before calling IAsyncReader_WaitForNext.
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@ -415,6 +415,7 @@ static void PullPin_Flush(PullPin *This)
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{
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{
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DWORD_PTR dwUser;
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DWORD_PTR dwUser;
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pSample = NULL;
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IAsyncReader_WaitForNext(This->pReader, 0, &pSample, &dwUser);
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IAsyncReader_WaitForNext(This->pReader, 0, &pSample, &dwUser);
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if (!pSample)
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if (!pSample)
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