Added more MIDI messages 16<=>32 mapping.

dlls/winmm/mmsystem.c

@@ -2202,14 +2202,13 @@ UINT16 WINAPI midiOutPrepareHeader16(HMIDIOUT16 hMidiOut,
 				     UINT16 uSize)
 {
     LPWINE_MLD		wmld;
-    LPMIDIHDR16		lpMidiOutHdr = PTR_SEG_TO_LIN(lpsegMidiOutHdr);
 
     TRACE("(%04X, %p, %d)\n", hMidiOut, lpsegMidiOutHdr, uSize);
 
     if ((wmld = MMDRV_Get(hMidiOut, MMDRV_MIDIOUT, FALSE)) == NULL) 
 	return MMSYSERR_INVALHANDLE;
 
-    return MMDRV_Message(wmld, MODM_PREPARE, (DWORD)lpMidiOutHdr, uSize, FALSE);
+    return MMDRV_Message(wmld, MODM_PREPARE, (DWORD)lpsegMidiOutHdr, uSize, FALSE);
 }
 
 /**************************************************************************

include/mmsystem.h

@@ -561,20 +561,20 @@ typedef struct {
 DECL_WINELIB_TYPE_AW(MIDIINCAPS)
 DECL_WINELIB_TYPE_AW(LPMIDIINCAPS)
 
-typedef struct {
+typedef struct midihdr16_tag {
     LPSTR	lpData;		/* pointer to locked data block */
     DWORD	dwBufferLength;	/* length of data in data block */
     DWORD	dwBytesRecorded;/* used for input only */
     DWORD	dwUser;		/* for client's use */
     DWORD	dwFlags;	/* assorted flags (see defines) */
-    struct midihdr_tag *lpNext;	/* reserved for driver */
+    struct midihdr16_tag *lpNext;	/* reserved for driver */
     DWORD	reserved;	/* reserved for driver */
 } MIDIHDR16, *LPMIDIHDR16;
 
 /* It seems that Win32 has a slightly different structure than Win 16.
  * sigh....
  */
-typedef struct {
+typedef struct midihdr_tag {
     LPSTR	lpData;		/* pointer to locked data block */
     DWORD	dwBufferLength;	/* length of data in data block */
     DWORD	dwBytesRecorded;/* used for input only */