Akihiro Sagawa : msvcrt: Fix mbtowc_l in C locale.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 23b8c4df1910832dd409f6c8cc8906ac64be4279
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=23b8c4df1910832dd409f6c8cc8906ac64be4279

Author: Akihiro Sagawa <sagawa.aki at gmail.com>
Date:   Wed Mar 27 23:16:44 2013 +0900

msvcrt: Fix mbtowc_l in C locale.

---

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

diff --git a/dlls/msvcrt/mbcs.c b/dlls/msvcrt/mbcs.c
index 121edbb..fdc5422 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;