wineoss.drv: Remove unneeded casts

[Andrew Talbot]

Changelog:
    wineoss.drv: Remove unneeded casts.

diff --git a/dlls/wineoss.drv/audio.c b/dlls/wineoss.drv/audio.c
index 7ea80a6..ebd785e 100644
--- a/dlls/wineoss.drv/audio.c
+++ b/dlls/wineoss.drv/audio.c
@@ -1881,7 +1881,7 @@ static DWORD wodPlayer_FeedDSP(WINE_WAVEOUT* wwo)
 static	DWORD	CALLBACK	wodPlayer(LPVOID pmt)
 {
     WORD	  uDevID = (DWORD)pmt;
-    WINE_WAVEOUT* wwo = (WINE_WAVEOUT*)&WOutDev[uDevID];
+    WINE_WAVEOUT* wwo = &WOutDev[uDevID];
     DWORD         dwNextFeedTime = INFINITE;   /* Time before DSP needs feeding */
     DWORD         dwNextNotifyTime = INFINITE; /* Time before next wave completion */
     DWORD         dwSleepTime;
@@ -2529,7 +2529,7 @@ static void widRecorder_ReadHeaders(WINE_WAVEIN * wwi)
 static	DWORD	CALLBACK	widRecorder(LPVOID pmt)
 {
     WORD		uDevID = (DWORD)pmt;
-    WINE_WAVEIN*	wwi = (WINE_WAVEIN*)&WInDev[uDevID];
+    WINE_WAVEIN*	wwi = &WInDev[uDevID];
     WAVEHDR*		lpWaveHdr;
     DWORD		dwSleepTime;
     DWORD		bytesRead;
diff --git a/dlls/wineoss.drv/midi.c b/dlls/wineoss.drv/midi.c
index 4245ad0..aa9088a 100644
--- a/dlls/wineoss.drv/midi.c
+++ b/dlls/wineoss.drv/midi.c
@@ -568,7 +568,7 @@ static void midReceiveChar(WORD wDevID, unsigned char value, DWORD dwTime)
 	    lpMidiHdr = MidiInDev[wDevID].lpQueueHdr;
 	    lpMidiHdr->dwFlags &= ~MHDR_INQUEUE;
 	    lpMidiHdr->dwFlags |= MHDR_DONE;
-	    MidiInDev[wDevID].lpQueueHdr = (LPMIDIHDR)lpMidiHdr->lpNext;
+	    MidiInDev[wDevID].lpQueueHdr = lpMidiHdr->lpNext;
 	    if (MIDI_NotifyClient(wDevID, MIM_LONGDATA, (DWORD)lpMidiHdr, dwTime) != MMSYSERR_NOERROR) {
 		WARN("Couldn't notify client\n");
 	    }
@@ -856,8 +856,8 @@ static DWORD midAddBuffer(WORD wDevID, LPMIDIHDR lpMidiHdr, DWORD dwSize)
 
 	for (ptr = MidiInDev[wDevID].lpQueueHdr;
 	     ptr->lpNext != 0;
-	     ptr = (LPMIDIHDR)ptr->lpNext);
-	ptr->lpNext = (struct midihdr_tag*)lpMidiHdr;
+	     ptr = ptr->lpNext);
+	ptr->lpNext = lpMidiHdr;
     }
     LeaveCriticalSection(&crit_sect);
 
@@ -926,7 +926,7 @@ static DWORD midReset(WORD wDevID)
 			      (DWORD)MidiInDev[wDevID].lpQueueHdr, dwTime) != MMSYSERR_NOERROR) {
 	    WARN("Couldn't notify client\n");
 	}
-	MidiInDev[wDevID].lpQueueHdr = (LPMIDIHDR)MidiInDev[wDevID].lpQueueHdr->lpNext;
+	MidiInDev[wDevID].lpQueueHdr = MidiInDev[wDevID].lpQueueHdr->lpNext;
     }
     LeaveCriticalSection(&crit_sect);