Piotr Caban : msvcrt: Fixed _ungetwc implementation.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 39345a1b15ed4870b5ce49fbdf877ad226c836f4
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=39345a1b15ed4870b5ce49fbdf877ad226c836f4

Author: Piotr Caban <piotr at codeweavers.com>
Date:   Tue Oct 23 18:09:48 2012 +0200

msvcrt: Fixed _ungetwc implementation.

---

 dlls/msvcrt/file.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index d9ce987..185b1e2 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -3995,9 +3995,12 @@ int CDECL MSVCRT_ungetc(int c, MSVCRT_FILE * file)
 MSVCRT_wint_t CDECL MSVCRT_ungetwc(MSVCRT_wint_t wc, MSVCRT_FILE * file)
 {
     MSVCRT_wchar_t mwc = wc;
-    char * pp = (char *)&mwc;
+    unsigned char * pp = (unsigned char *)&mwc;
     int i;
 
+    if (wc == MSVCRT_WEOF)
+        return MSVCRT_WEOF;
+
     MSVCRT__lock_file(file);
     for(i=sizeof(MSVCRT_wchar_t)-1;i>=0;i--) {
         if(pp[i] != MSVCRT_ungetc(pp[i],file)) {