net/wireshark: Update to 4.2.0

See https://www.wireshark.org/docs/relnotes/wireshark-4.2.0.html for a
list of changes in this release.

Of note to FreeBSD users, wireshark now uses Qt6 (rather than 5), and
development files (e.g., headers), while installed by default can be
disabled by unchecking the DEVELOPMENT option.

net/wireshark/files/patch-wsutil_ws__strptime.c

@@ -0,0 +1,33 @@
+--- wsutil/ws_strptime.c.orig	2023-11-17 16:54:52 UTC
++++ wsutil/ws_strptime.c
+@@ -197,9 +197,12 @@ ws_strptime(const char *buf, const char *fmt, struct t
+ 	    day_offset = -1, week_offset = 0, offs, mandatory;
+ 	const char *new_fmt;
+ 	long tm_gmtoff;
++	struct tm *gtm;
++	const time_t zero_secs = 0;
+ 	const char *tm_zone;
+
+ 	bp = (const unsigned char *)buf;
++	gtm = localtime(&zero_secs);
+
+ 	while (bp != NULL && (c = *fmt++) != '\0') {
+ 		/* Clear `alternate' modifier prior to new conversion. */
+@@ -570,7 +573,7 @@ namedzone:
+ 				}
+ 				/* 'J' is local time */
+ 				if (delim(bp[1]) && *bp == 'J') {
+-					tm_gmtoff = -timezone;
++					tm_gmtoff = gtm->tm_gmtoff;
+ 					tm_zone = NULL; /* XXX */
+ 					SET_ZONEP(zonep, tm_gmtoff, tm_zone);
+ 					bp++;
+@@ -605,7 +608,7 @@ namedzone:
+ 						 NULL, 2);
+ 				if (ep != NULL) {
+ 					tm->tm_isdst = i;
+-					tm_gmtoff = -timezone;
++					tm_gmtoff = gtm->tm_gmtoff;
+ 					tm_zone = tzname[i];
+ 					SET_ZONEP(zonep, tm_gmtoff, tm_zone);
+ 					bp = ep;