pass NULL to library_init() to load settings from default file

src/charon/plugins/sql/pool.c

@@ -624,7 +624,7 @@ int main(int argc, char *argv[])
 	atexit(library_deinit);
 
 	/* initialize library */
-	if (!library_init(STRONGSWAN_CONF))
+	if (!library_init(NULL))
 	{
 		exit(SS_RC_LIBSTRONGSWAN_INTEGRITY);
 	}