gphoto.ds: Constify a variable

[Andrew Talbot]

Changelog:
    gphoto.ds: Constify a variable.

diff -urN a/dlls/gphoto2.ds/capability.c b/dlls/gphoto2.ds/capability.c
--- a/dlls/gphoto2.ds/capability.c	2006-05-23 13:48:01.000000000 +0100
+++ b/dlls/gphoto2.ds/capability.c	2007-04-30 20:16:20.000000000 +0100
@@ -229,7 +229,8 @@
         return FALSE;
 }
 
-static TW_BOOL GPHOTO2_EnumSet16 (pTW_CAPABILITY pCapability, int nrofvalues, TW_UINT16 *values, int current, int def)
+static TW_BOOL GPHOTO2_EnumSet16 (pTW_CAPABILITY pCapability, int nrofvalues,
+                                  const TW_UINT16 *values, int current, int def)
 {
     pTW_ENUMERATION pVal;
     pCapability->hContainer = (TW_HANDLE)GlobalAlloc (0, sizeof(TW_ENUMERATION) + nrofvalues * sizeof(TW_UINT16));