[fix] Exit is quit script not an end function

* Halt function and not all script process

debian/postinst

@@ -87,7 +87,7 @@ function generate_domains_type() {
 
 	#If any php, nothing to do
 	if [[ -z "${php_list}" ]]; then
-		exit 0;
+		return 0;
 	fi
 
 	for php_version in $php_list