--- a/mercurial/cext/osutil.c	Tue Apr 21 16:02:23 2015 -0400
+++ b/mercurial/cext/osutil.c	Mon Oct 16 14:49:35 2017 -0400
@@ -121,7 +121,7 @@
 }
 
 static PyTypeObject listdir_stat_type = {
-	PyVarObject_HEAD_INIT(NULL, 0)
+	PyVarObject_HEAD_INIT(NULL, 0) /* header */
 	"osutil.stat",             /*tp_name*/
 	sizeof(struct listdir_stat), /*tp_basicsize*/
 	0,                         /*tp_itemsize*/