fixed stdout stuff

protonkey

@@ -16,7 +16,7 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program. If not, see https://www.gnu.org/licenses/.
 
-if ! test -n "$1"; then
+if test -z "$1"; then
   printf "Usage: %s [ProtonMail address]\n" "$0" 1>&2
   exit 64 # syexits(3) EX_USAGE
 fi
@@ -34,9 +34,10 @@ done
 URL="https://api.protonmail.ch/pks/lookup?op=get&search=$1"
 RESPONSE="$(curl -s "$URL")"
 
-if ! printf "%s\n" "$RESPONSE"; then
+if [ "$RESPONSE" = 'No key found' ]; then
   printf "%s\n" "$RESPONSE" 1>&2
   exit 76 # sysexits(3) EX_PROTOCOL
 else
+  printf "%s\n" "$RESPONSE"
   exit 0
 fi