From 23b8c4df1910832dd409f6c8cc8906ac64be4279 Mon Sep 17 00:00:00 2001
From: Akihiro Sagawa <sagawa.aki@gmail.com>
Date: Wed, 27 Mar 2013 23:16:44 +0900
Subject: [PATCH] msvcrt: Fix mbtowc_l in C locale.

---
 dlls/msvcrt/mbcs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/dlls/msvcrt/mbcs.c b/dlls/msvcrt/mbcs.c
index 121edbb48c6..fdc5422c64a 100644
--- a/dlls/msvcrt/mbcs.c
+++ b/dlls/msvcrt/mbcs.c
@@ -2016,7 +2016,9 @@ int CDECL MSVCRT_mbtowc_l(MSVCRT_wchar_t *dst, const char* str, MSVCRT_size_t n,
 
     if(n <= 0 || !str)
         return 0;
-    if(!MultiByteToWideChar(locinfo->lc_codepage, 0, str, n, &tmpdst, 1))
+    if(!locinfo->lc_codepage)
+        tmpdst = (unsigned char)*str;
+    else if(!MultiByteToWideChar(locinfo->lc_codepage, 0, str, n, &tmpdst, 1))
         return -1;
     if(dst)
         *dst = tmpdst;