Always explicitly set tm_isdst before calling mktime().

Except in rare cases, we want to set it to -1 so that we let mktime()
determine whether DST/Summer Time was in effect at the given date and
time rather than pretending that we know whether it's in effect or not.

Change-Id: I0ea75317dd308a515cedf4d1260b583e1592cc9b
Reviewed-on: https://code.wireshark.org/review/27431
Reviewed-by: Guy Harris <guy@alum.mit.edu>

1 files changed, 1 insertions, 0 deletions

diff --git a/editcap.c b/editcap.c
index b9b980c034..e486756482 100644
--- a/editcap.c
+++ b/editcap.c
@@ -1308,6 +1308,7 @@ main(int argc, char *argv[])
         stoptm.tm_year = 135;
         stoptm.tm_mday = 31;
         stoptm.tm_mon = 11;
+        stoptm.tm_isdst = -1;
 
         stoptime = mktime(&stoptm);
     }