msdmo: Assign to structs instead of using memcpy

[Andrew Talbot]

Changelog:
    msdmo: Assign to structs instead of using memcpy.

diff --git a/dlls/msdmo/dmort.c b/dlls/msdmo/dmort.c
index 67d18aa..fe19100 100644
--- a/dlls/msdmo/dmort.c
+++ b/dlls/msdmo/dmort.c
@@ -168,9 +168,9 @@ HRESULT WINAPI MoCopyMediaType(DMO_MEDIA_TYPE* pdst,
     if (!pdst || !psrc)
         return E_POINTER;
 
-    memcpy(&pdst->majortype,  &psrc->majortype,  sizeof(psrc->majortype));
-    memcpy(&pdst->subtype,    &psrc->subtype,    sizeof(psrc->subtype));
-    memcpy(&pdst->formattype, &psrc->formattype, sizeof(psrc->formattype));
+    pdst->majortype = psrc->majortype;
+    pdst->subtype = psrc->subtype;
+    pdst->formattype = psrc->formattype;
 
     pdst->bFixedSizeSamples    = psrc->bFixedSizeSamples;
     pdst->bTemporalCompression = psrc->bTemporalCompression;