Fix -Wundef warning.  It was fixed upstream as part of this commit:

commit 3247f28556d1de7f9837f6e9ee8c63fa56b93c13
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Thu Jul 3 01:36:10 2014 +0530

    Sync up loadmsgcat.c with gettext

diff --git a/intl/loadmsgcat.c b/intl/loadmsgcat.c
index c70152010ecd2624..243783a9ac4d0929 100644
--- a/intl/loadmsgcat.c
+++ b/intl/loadmsgcat.c
@@ -89,6 +89,7 @@ char *alloca ();
 # include "../locale/localeinfo.h"
 # include <not-cancel.h>
 # include <bits/libc-lock.h>
+# define PRI_MACROS_BROKEN 0
 #endif
 
 /* Provide fallback values for macros that ought to be defined in <inttypes.h>.