[glib] test-pipe-unix: Add missing include

[Colin Walters <walters src gnome org>]

commit dc4922af219397b18ca4d9d0ba53f0a99b43f3d4
Author: Colin Walters <walters verbum org>
Date:   Thu Nov 1 19:40:07 2012 -0400

    test-pipe-unix: Add missing include
    
    Fixes the build with -Werror=missing-prototypes.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=687385

 gio/tests/test-pipe-unix.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/gio/tests/test-pipe-unix.c b/gio/tests/test-pipe-unix.c
index 07f6198..4b348db 100644
--- a/gio/tests/test-pipe-unix.c
+++ b/gio/tests/test-pipe-unix.c
@@ -27,6 +27,7 @@
 #include <gio/gio.h>
 
 #include "test-io-stream.h"
+#include "test-pipe-unix.h"
 
 #ifdef G_OS_UNIX
 #   include <gio/gunixinputstream.h>