patch 9.0.1313: some settings use the current codepage instead of 'encoding'
Problem: Some settings use the current codepage instead of 'encoding'.
Solution: Adjust how options are initialized. (Ken Takata, closes #11992)
diff --git a/src/proto/os_win32.pro b/src/proto/os_win32.pro
index 9f8b969..7ea5388 100644
--- a/src/proto/os_win32.pro
+++ b/src/proto/os_win32.pro
@@ -1,4 +1,5 @@
/* os_win32.c */
+void mch_get_exe_name(void);
HINSTANCE vimLoadLib(const char *name);
int mch_is_gui_executable(void);
HINSTANCE find_imported_module_by_funcname(HINSTANCE hInst, const char *funcname);