Fix skipping unused portions in TimeZoneInfo::Load() for version 1 zonefiles. (#236)
Fix skipping unused portions in TimeZoneInfo::Load() for version 1 zonefiles. (#236)

In theory, leap-second record of version 1 zonefiles is 4 + 4 bytes per record.
https://www.rfc-editor.org/rfc/rfc8536.html#section-3.2

In practice, this commit won't make any difference because we return early
at line 437 if hdr.leapcnt != 0.

Co-authored-by: Shuo Chen <3a7f629692bae82129b5886a7ea0fbd0a7330ed6@google.com>
google/cctz,google/cctz