no return

src/freedombone-selector

@@ -61,6 +61,7 @@ function app_is_installed {
 	app_name="$1"
 	if [ ! -f $COMPLETION_FILE ]; then
 		echo "0"
+		return
 	fi
 
 	if ! grep -Fxq "install_${app_name}" $COMPLETION_FILE; then