localtime, strptime: time.h r1.33 removed the need to cast away const

ok jca millert

lib/libc/time/localtime.c

···
-/*	$OpenBSD: localtime.c,v 1.71 2025/08/17 08:42:21 phessler Exp $ */
+/*	$OpenBSD: localtime.c,v 1.72 2025/11/20 10:59:56 tb Exp $ */
 /*
 ** This file is in the public domain, so clarified as of
 ** 1996-06-05 by Arthur David Olson.
···
 		tmp->tm_zone = wildabbr;
 	else {
 		if (gmtptr == NULL)
-			tmp->tm_zone = (char *)gmt;
+			tmp->tm_zone = gmt;
 		else
 			tmp->tm_zone = gmtptr->chars;
 	}

lib/libc/time/strptime.c

···
-/*	$OpenBSD: strptime.c,v 1.33 2025/08/26 22:30:42 millert Exp $ */
+/*	$OpenBSD: strptime.c,v 1.34 2025/11/20 10:59:56 tb Exp $ */
 /*	$NetBSD: strptime.c,v 1.12 1998/01/20 21:39:40 mycroft Exp $	*/
 /*-
  * Copyright (c) 1997, 1998, 2005, 2008 The NetBSD Foundation, Inc.
···
 				ep = _find_string(bp, &i, nast, NULL, 4);
 				if (ep != NULL) {
 					tm->tm_gmtoff = (-5 - i) * SECSPERHOUR;
-					tm->tm_zone = (char *)nast[i];
+					tm->tm_zone = nast[i];
 					bp = ep;
 					continue;
 				}
···
 				if (ep != NULL) {
 					tm->tm_isdst = 1;
 					tm->tm_gmtoff = (-4 - i) * SECSPERHOUR;
-					tm->tm_zone = (char *)nadt[i];
+					tm->tm_zone = nadt[i];
 					bp = ep;
 					continue;
 				}