[tz] zone file format very strict

Hi I noticed that the last line of a zone file like # Zone  NAME            STDOFF  RULES FORMAT  [UNTIL] Zone    Asia/Kabul      4:36:48 -       LMT     1890                         4:00    -       +04     1945                         4:30    -       +0430 does not suffer a trailing TAB character, behind the +0430 I think the zone file compiling mechanism could be a bit more tolerant of trailing white space. The issue came about because I employ a zone file generator utility, which accidentally created such trailing tabs in some cases. I fixed my generator, but wanted to mention this anyway.