[glib] Make the protocol.c test program compile on Windows

[Tor Lillqvist <tml src gnome org>]

commit 05354cefc54a0f42e5d7dee1798d2b56c135c12c
Author: Tor Lillqvist <tml iki fi>
Date:   Tue Jun 22 12:41:01 2010 +0300

    Make the protocol.c test program compile on Windows
    
    Note that it does not actually work, though. Maybe because
    g_io_channel_set_flags() is not implemented for file descriptor based
    GIOChannels on Windows.

 glib/tests/protocol.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/glib/tests/protocol.c b/glib/tests/protocol.c
index 677f385..4d8f63f 100644
--- a/glib/tests/protocol.c
+++ b/glib/tests/protocol.c
@@ -22,7 +22,13 @@
 
 #include <errno.h>  /* errno */
 #include <glib.h>
+#ifndef _WIN32
 #include <unistd.h> /* pipe() */
+#else
+#include <io.h>
+#include <fcntl.h>
+#define pipe(fds) _pipe(fds, 4096, _O_BINARY)
+#endif
 
 static void
 debug (void)