dmband: Indirection levels fix

[Andrew Talbot]

Changelog:
    dmband: Indirection levels fix.

diff --git a/dlls/dmband/band.c b/dlls/dmband/band.c
index 891fb5a..8b89573 100644
--- a/dlls/dmband/band.c
+++ b/dlls/dmband/band.c
@@ -173,7 +173,7 @@ static HRESULT WINAPI IDirectMusicBandImpl_IDirectMusicObject_SetDescriptor (LPD
 		This->pDesc->ftDate = pDesc->ftDate;
 	if (pDesc->dwValidData & DMUS_OBJ_MEMORY) {
 		This->pDesc->llMemLength = pDesc->llMemLength;
-		memcpy (This->pDesc->pbMemData, pDesc->pbMemData, sizeof (pDesc->pbMemData));
+		memcpy (&This->pDesc->pbMemData, &pDesc->pbMemData, sizeof (pDesc->pbMemData));
 	}
 	if (pDesc->dwValidData & DMUS_OBJ_STREAM) {
 		/* according to MSDN, we copy the stream */