quartz/filesource: Correctly initialize the default media type.

dlls/quartz/filesource.c

@@ -623,8 +623,8 @@ static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFi
             This->pmt->cbFormat = 0;
             This->pmt->pbFormat = NULL;
             This->pmt->pUnk = NULL;
-            This->pmt->lSampleSize = 0;
-            This->pmt->formattype = FORMAT_None;
+            This->pmt->lSampleSize = 1;
+            This->pmt->formattype = GUID_NULL;
             hr = GetClassMediaFile(pReader, pszFileName, &This->pmt->majortype, &This->pmt->subtype, NULL);
             if (FAILED(hr))
             {

dlls/quartz/tests/filesource.c

@@ -237,11 +237,9 @@ static void test_file_source_filter(void)
         ok(file_mt.bFixedSizeSamples == TRUE, "Got fixed size %d.\n", file_mt.bFixedSizeSamples);
         ok(file_mt.bTemporalCompression == FALSE, "Got temporal compression %d.\n",
                 file_mt.bTemporalCompression);
-todo_wine {
         ok(file_mt.lSampleSize == 1, "Got sample size %u.\n", file_mt.lSampleSize);
         ok(IsEqualGUID(&file_mt.formattype, &GUID_NULL), "Got format type %s.\n",
                 wine_dbgstr_guid(&file_mt.formattype));
-}
         ok(!file_mt.pUnk, "Got pUnk %p.\n", file_mt.pUnk);
         ok(!file_mt.cbFormat, "Got format size %#x.\n", file_mt.cbFormat);
         ok(!file_mt.pbFormat, "Got format %p.\n", file_mt.pbFormat);