tcl clock34.{6,12..18} fail on Rawhide

[Jeff Johnson]

Seeing these fail a couple of runs in a row now on Rawhide, not sure what's
going on:

clock-34.6 failed
Message from the test:
clock scan tests
==== Contents of test case:

    set time [clock scan "Oct 23,1992 15:00"]
    clock format $time -format {%b %d,%Y %H:%M}

---- Test generated error; Return code was: 1
---- Return code should have been one of: 0 2
---- errorInfo: time value too large/small to represent
    while executing
"ConvertLocalToUTC $date[set date {}] $TZData($timezone) 2361222"
    (procedure "FreeScan" line 84)
    invoked from within
"FreeScan $string $base $timezone $locale"
    (procedure "::tcl::clock::scan" line 70)
    invoked from within
"clock scan "Oct 23,1992 15:00""
    ("uplevel" body line 2)
    invoked from within
"uplevel 1 $script"
---- errorCode: NONE