winmm/wineoss: Cast-qual warning fix

[Andrew Talbot]

Changelog:
    winmm/wineoss: Cast-qual warning fix.

diff -urN a/dlls/winmm/wineoss/dscapture.c b/dlls/winmm/wineoss/dscapture.c
--- a/dlls/winmm/wineoss/dscapture.c	2006-11-13 17:34:40.000000000 +0000
+++ b/dlls/winmm/wineoss/dscapture.c	2006-11-23 20:15:22.000000000 +0000
@@ -853,7 +853,7 @@
 {
     int i;
     for (i = 0; i < length; i++)
-        ((char *)dst)[i] = ((char *)src)[i];
+        ((char *)dst)[i] = ((const char *)src)[i];
     return dst;
 }