--- a/mercurial/cext/dirs.c	Mon Oct 02 19:02:43 2017 +0100
+++ b/mercurial/cext/dirs.c	Mon Oct 02 19:06:00 2017 +0100
@@ -9,6 +9,7 @@
 
 #define PY_SSIZE_T_CLEAN
 #include <Python.h>
+
 #include "util.h"
 
 #ifdef IS_PY3K