[jgardou] 54179: [WinMM] - avoid buffer overrun. - do not try to unload uninitialized driver. See issue #6343 for more details.

Author: jgardou
Date: Mon Oct 17 16:35:10 2011
New Revision: 54179

URL: http://svn.reactos.org/svn/reactos?rev=54179&view=rev
Log:
[WinMM]
- avoid buffer overrun.
- do not try to unload uninitialized driver.
See issue #6343 for more details.

Modified:
    trunk/reactos/dll/win32/winmm/lolvldrv.c

Modified: trunk/reactos/dll/win32/winmm/lolvldrv.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/winmm/lolvldrv.c?...
==============================================================================
--- trunk/reactos/dll/win32/winmm/lolvldrv.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/winmm/lolvldrv.c [iso-8859-1] Mon Oct 17 16:35:10 2011
@@ -634,7 +634,7 @@
     }

/* unload driver, in reverse order of loading */
-    i = sizeof(MMDrvs) / sizeof(MMDrvs[0]);
+    i = MMDrvsHi - 1;
     while (i-- > 0)
     {
         MMDRV_ExitPerType(&MMDrvs[i], MMDRV_AUX);