wineps.drv: Constify some variables

[Andrew Talbot]

Changelog:
    wineps.drv: Constify some variables.

diff -urN a/dlls/wineps.drv/init.c b/dlls/wineps.drv/init.c
--- a/dlls/wineps.drv/init.c	2006-11-17 20:11:48.000000000 +0000
+++ b/dlls/wineps.drv/init.c	2007-02-23 16:16:24.000000000 +0000
@@ -53,7 +53,7 @@
 static void *cupshandle = NULL;
 #endif
 
-static PSDRV_DEVMODEA DefaultDevmode =
+static const PSDRV_DEVMODEA DefaultDevmode =
 {
   { /* dmPublic */
 /* dmDeviceName */	"Wine PostScript Driver",
@@ -109,7 +109,7 @@
 HANDLE PSDRV_Heap = 0;
 
 static HFONT PSDRV_DefaultFont = 0;
-static LOGFONTA DefaultLogFont = {
+static const LOGFONTA DefaultLogFont = {
     100, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, ANSI_CHARSET, 0, 0,
     DEFAULT_QUALITY, FIXED_PITCH | FF_MODERN, ""
 };