[gtk+] Avoid stray output from configure

[Matthias Clasen <matthiasc src gnome org>]

commit 238cdd5e37931118b823f4d1e01e814e2fffd09d
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Mar 2 20:57:29 2015 -0500

    Avoid stray output from configure
    
    The new xgettext check was leaving a messages.po file behind.

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 839d9f0..3c2bf98 100644
--- a/configure.ac
+++ b/configure.ac
@@ -667,7 +667,7 @@ ALL_LINGUAS="`grep -v '^#' "$srcdir/po/LINGUAS" | tr '\n' ' '`"
 AM_GLIB_GNU_GETTEXT
 
 AC_MSG_CHECKING([whether xgettext supports ui files])
-if $ac_cv_path_XGETTEXT --language=Glade $srcdir/gtk/ui/gtkfilechooserwidget.ui > /dev/null 2>&1; then
+if $ac_cv_path_XGETTEXT --output=- --language=Glade $srcdir/gtk/ui/gtkfilechooserwidget.ui > /dev/null 2>&1; 
then
   AC_MSG_RESULT([yes])
 else
   AC_MSG_RESULT([no])