+ if (!hn) {
+ /* Don't override the hostname if it is unset and not
+ * explicitly configured */
+
+ char *old_hostname = NULL;
+
+ if ((old_hostname = gethostname_malloc())) {
+ bool already_set;
+
+ already_set = old_hostname[0] != 0;
+ free(old_hostname);
+
+ if (already_set)
+ goto finish;
+ }
+
+ hn = "localhost";
+ }
+