Revert "minlen can never be 60 when processing DST changes, so do not check for that."
Revert "minlen can never be 60 when processing DST changes, so do not check for that."

This reverts commit b65c89b367efa1f208dbbcaa98dbefaf203a937f.

Be more relaxed when processing DST changes in case of reception errors,
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rene0/dcf77pi,rene0/dcf77pi