gdi32/user32: Make __wine_make_gdi_object_system CDECL.

dlls/gdi32/gdiobj.c

@@ -442,7 +442,7 @@ static const struct DefaultFontInfo default_fonts[] =
  * For a description of the GDI object magics and their flags,
  * see "Undocumented Windows" (wrong about the OBJECT_NOSYSTEM flag, though).
  */
-void __wine_make_gdi_object_system( HGDIOBJ handle, BOOL set)
+void CDECL __wine_make_gdi_object_system( HGDIOBJ handle, BOOL set)
 {
     GDIOBJHDR *ptr = GDI_GetObjPtr( handle, MAGIC_DONTCARE );
 

dlls/user32/sysparams.c

@@ -368,7 +368,7 @@ static const WORD wPattern55AA[] = { 0x5555, 0xaaaa, 0x5555, 0xaaaa, 0x5555, 0xa
 
 HBRUSH SYSCOLOR_55AABrush = 0;
 
-extern void __wine_make_gdi_object_system( HGDIOBJ handle, BOOL set );
+extern void CDECL __wine_make_gdi_object_system( HGDIOBJ handle, BOOL set );
 
 
 /* This function is a copy of the one in objects/font.c */