setup.sh: use set -eu

diff --git a/setup.sh b/setup.sh
index f36552b1d56124330d02eb9d725d222ae28528c4..3515b06e5f7bde25d3d580b51d84a3a1d6d4a437 100755 (executable)
--- a/setup.sh
+++ b/setup.sh
@@ -18,7 +18,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
-set -e
+set -eu
 
 . ../lib.sh