[PATCH 1/1] msvcrt: Add _IONBF flag check in _filbuf to avoid dead loop in application which sets the flag.

[Kun Yang]

From: Kun Yang

Signed-off-by: Kun Yang 
Change-Id: Ia68e11ccb0aa563eeb73a2f5cb93afcd328e1937
---
 dlls/msvcrt/file.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index dda12a70194..38b422b2fab 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -3834,7 +3834,7 @@ int CDECL _filbuf(FILE* file)
             return EOF;
     }

-    if(!(file->_flag & (_IOMYBUF | MSVCRT__USERBUF))) {
+    if(!(file->_flag & (_IONBF | _IOMYBUF | MSVCRT__USERBUF))) {
         int r;
         if ((r = _read(file->_file,&c,1)) != 1) {
             file->_flag |= (r == 0) ? _IOEOF : _IOERR;