[openssl/openssl] 00e38e: Fix coverity 1516093 tainted scalar

[Todd Short]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 00e38edcfb95b556a59de96e0c18343828929c8f
      https://github.com/openssl/openssl/commit/00e38edcfb95b556a59de96e0c18343828929c8f
  Author: Todd Short <tshort at akamai.com>
  Date:   2022-11-02 (Wed, 02 Nov 2022)

  Changed paths:
    M ssl/t1_trce.c

  Log Message:
  -----------
  Fix coverity 1516093 tainted scalar

|uclen| is created from three byte values, so this seems a bit
redundant, but if it makes coverity happy

Reviewed-by: Hugo Landau <hlandau at openssl.org>
Reviewed-by: Tomas Mraz <tomas at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19519)