wdc: On FreeBSD, get the timezone the same as with real glibc

FreeBSD 15 and newer finally has the timezone variable (prior it that
was a compat function leftover from 4BSD). Older versions are still
supported. Both have tm_gmoff, which I've always preferred for better
portability.

Signed-off-by: Warner Losh <imp@bsdimp.com>

plugins/wdc/wdc-utils.c

@@ -81,7 +81,7 @@ int wdc_UtilsGetTime(PUtilsTimeInfo timeInfo)
 	timeInfo->second		=  currTimeInfo.tm_sec;
 	timeInfo->msecs			=  0;
 	timeInfo->isDST			=  currTimeInfo.tm_isdst;
-#if defined(__GLIBC__) && !defined(__UCLIBC__) && !defined(__MUSL__)
+#if (defined(__GLIBC__) && !defined(__UCLIBC__) && !defined(__MUSL__)) || defined(__FreeBSD__)
 	timeInfo->zone			= -currTimeInfo.tm_gmtoff / 60;
 #else
 	timeInfo->zone			= -1 * (timezone / SECONDS_IN_MIN);