winealsa.drv: Declare a function static

[Andrew Talbot]

Changelog:
    winealsa.drv: Declare a function static.

diff --git a/dlls/winealsa.drv/alsa.h b/dlls/winealsa.drv/alsa.h
index b6c1e0e..c88925d 100644
--- a/dlls/winealsa.drv/alsa.h
+++ b/dlls/winealsa.drv/alsa.h
@@ -171,7 +171,6 @@ extern DWORD		ALSA_WidNumDevs;
 extern WINE_WAVEDEV	*WOutDev;
 extern DWORD		ALSA_WodNumMallocedDevs;
 extern DWORD		ALSA_WodNumDevs;
-DWORD wodSetVolume(WORD wDevID, DWORD dwParam);
 
 /* alsa.c */
 int	ALSA_InitRingMessage(ALSA_MSG_RING* omr);
diff --git a/dlls/winealsa.drv/waveout.c b/dlls/winealsa.drv/waveout.c
index b99731b..fe951da 100644
--- a/dlls/winealsa.drv/waveout.c
+++ b/dlls/winealsa.drv/waveout.c
@@ -1094,7 +1094,7 @@ static DWORD wodGetVolume(WORD wDevID, LPDWORD lpdwVol)
 /**************************************************************************
  * 				wodSetVolume			[internal]
  */
-DWORD wodSetVolume(WORD wDevID, DWORD dwParam)
+static DWORD wodSetVolume(WORD wDevID, DWORD dwParam)
 {
     WORD	       wleft, wright;
     WINE_WAVEDEV*      wwo;