[gnome-calculator] Improve autogen.sh a bit more

[Michael Catanzaro <mcatanzaro src gnome org>]

commit d568620ad137fabc7532bb41130695f5c4f64ef8
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Sun Jun 28 11:02:14 2015 -0500

    Improve autogen.sh a bit more

 autogen.sh |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/autogen.sh b/autogen.sh
index 34bf0c3..2f4d7e6 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -21,12 +21,12 @@ set -x
 aclocal --install || exit 1
 intltoolize --force --copy --automake || exit 1
 autoreconf --verbose --force --install -Wno-portability || exit 1
-set +x
+{ set +x; } 2>/dev/null
 
 if [ "$NOCONFIGURE" = "" ]; then
         set -x
         $srcdir/configure "$@" || exit 1
-        set +x
+        { set +x; } 2>/dev/null
 
         if [ "$1" = "--help" ]; then exit 0 else
                 echo "Now type \`make\' to compile $PKG_NAME" || exit 1