[gtkhtml] Fix configure output for iso-codes check.

[Priit Laes <plaes src gnome org>]

commit 3d91500cdc2dc2bfefec21f9ca52274ca089a1ba
Author: Priit Laes <plaes plaes org>
Date:   Mon Mar 8 17:46:16 2010 +0200

    Fix configure output for iso-codes check.

 configure.ac |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index e525b83..a111f51 100644
--- a/configure.ac
+++ b/configure.ac
@@ -209,8 +209,8 @@ fi
 
 if test "x$have_iso_codes" = "xyes"; then
 	AC_MSG_CHECKING([whether iso-codes has iso-639 and iso-3166 domains])
-	if $PKG_CONFIG --variable=domains iso-codes | grep 639 && \
-		$PKG_CONFIG --variable=domains iso-codes | grep 3166 ; then
+	if $PKG_CONFIG --variable=domains iso-codes | grep 639 >/dev/null 2>&1 && \
+		$PKG_CONFIG --variable=domains iso-codes | grep 3166 >/dev/null 2>&1 ; then
 			result=yes
 	else
 		result=no