-char **strv_env_clean(char **l);
-char **strv_env_clean_log(char **e, const char *unit_id, const char *message);
+#define strv_env_clean(l) strv_env_clean_with_callback(l, NULL, NULL)
+char **strv_env_clean_with_callback(char **l, void (*invalid_callback)(const char *p, void *userdata), void *userdata);