winmm: Sign-compare warning fix (Resend)

[Andrew Talbot]

What is wrong with this patch, please?

Thanks,

-- Andy.
---
Changelog:
    winmm: Sign-compare warning fix.

diff --git a/dlls/winmm/lolvldrv.c b/dlls/winmm/lolvldrv.c
index 794c117..946d0d0 100644
--- a/dlls/winmm/lolvldrv.c
+++ b/dlls/winmm/lolvldrv.c
@@ -737,7 +737,7 @@ static  BOOL	MMDRV_ExitPerType(LPWINE_MM_DRIVER lpDrv, UINT type)
  */
 void    MMDRV_Exit(void)
 {
-    int i;
+    unsigned int i;
     TRACE("()\n");
 
     for (i = 0; i < sizeof(MM_MLDrvs) / sizeof(MM_MLDrvs[0]); i++)
@@ -753,8 +753,11 @@ void    MMDRV_Exit(void)
     }
 
     /* unload driver, in reverse order of loading */
-    for (i = sizeof(MMDrvs) / sizeof(MMDrvs[0]) - 1; i >= 0; i--)
+    i = sizeof(MMDrvs) / sizeof(MMDrvs[0]);
+    while (i > 0)
     {
+        --i;
+
         MMDRV_ExitPerType(&MMDrvs[i], MMDRV_AUX);
         MMDRV_ExitPerType(&MMDrvs[i], MMDRV_MIXER);
         MMDRV_ExitPerType(&MMDrvs[i], MMDRV_MIDIIN);