Sync our copy of the timezone library with IANA release tzcode2017c.

This is a trivial update containing only cosmetic changes.  The point
is just to get back to being synced with an official release of tzcode,
rather than some ad-hoc point in their commit history, which is where
commit 47f849a3c left it.

src/timezone/localtime.c

@@ -802,8 +802,8 @@ transtime(int year, const struct rule *rulep,
 {
 	bool		leapyear;
 	int32		value;
-	int			i,
-				d,
+	int			i;
+	int			d,
 				m1,
 				yy0,
 				yy1,