updater script optimization

update.sh

@@ -5,7 +5,9 @@ WEBSERVER='aquaria'
 build() {
 	[[ ! ${VIRTUAL_ENV} ]] && NO_VENV=1 && source ./venv/bin/activate
 	pelican
+	retval=$?
 	[[ ${NO_VENV} ]] && deactivate
+	return $retval
 }
 
 upload() {
@@ -13,13 +15,14 @@ upload() {
 }
 
 build
-
-while getopts u param
-do
+if [ $? == 0 ]; then
+    while getopts u param
+    do
         case "$param" in
             u) upload ;;
             *) echo "Not implemented: $1" >&2 && exit 1 ;;
         esac
-done
+    done
+fi