gdi32: Constify some variables (1 of 2)

[Andrew Talbot]

Changelog:
    gdi32: Constify some variables.

diff -urN a/dlls/gdi32/brush.c b/dlls/gdi32/brush.c
--- a/dlls/gdi32/brush.c	2006-11-17 17:51:14.000000000 +0000
+++ b/dlls/gdi32/brush.c	2007-04-29 12:04:14.000000000 +0100
@@ -57,7 +57,7 @@
     BRUSH_DeleteObject   /* pDeleteObject */
 };
 
-static HGLOBAL16 dib_copy(BITMAPINFO *info, UINT coloruse)
+static HGLOBAL16 dib_copy(const BITMAPINFO *info, UINT coloruse)
 {
     BITMAPINFO  *newInfo;
     HGLOBAL16   hmem;
diff -urN a/dlls/gdi32/enhmetafile.c b/dlls/gdi32/enhmetafile.c
--- a/dlls/gdi32/enhmetafile.c	2006-11-17 17:51:14.000000000 +0000
+++ b/dlls/gdi32/enhmetafile.c	2007-04-29 12:33:32.000000000 +0100
@@ -516,7 +516,7 @@
 
 #define IS_WIN9X() (GetVersion()&0x80000000)
 
-static void EMF_Update_MF_Xform(HDC hdc, enum_emh_data *info)
+static void EMF_Update_MF_Xform(HDC hdc, const enum_emh_data *info)
 {
     XFORM mapping_mode_trans, final_trans;
     FLOAT scaleX, scaleY;