win32: revised implementation of setlinebuf(3)

Microsoft Windows' setvbuf() doesn't support line buffering and
doesn't accept 0 as a valid value for the buffer size argument.

Replace the old macro definition with an implementation that
doesn't do anything.  It's only used if debug is enabled in ash
so there's no effect on the default build.

1 files changed, 1 insertions, 1 deletions

diff --git a/include/mingw.h b/include/mingw.h
index d274b7e1c..4c3354864 100644
--- a/include/mingw.h
+++ b/include/mingw.h
@@ -142,7 +142,7 @@ pid_t mingw_fork_compressor(int fd, const char *compressor, const char *mode);
 #define popen mingw_popen
 #define pclose mingw_pclose
 
-#define setlinebuf(fd) setvbuf(fd, (char *) NULL, _IOLBF, 0)
+IMPL(setlinebuf, void, ,FILE * UNUSED_PARAM)
 
 /*
  * ANSI emulation wrappers