RFR: 1840: A test failed due to the combination of SKARA-1823 and SKARA-755 [v2]

[Zhao Song]

> This patch fixes MailingListBridgeBotTests::simpleArchive.

Zhao Song has updated the pull request incrementally with one additional commit since the last revision:

  fix a problem

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Changes:
  - all: https://git.openjdk.org/skara/pull/1483/files
  - new: https://git.openjdk.org/skara/pull/1483/files/1b79db88..d6319d58

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=skara&pr=1483&range=01
 - incr: https://webrevs.openjdk.org/?repo=skara&pr=1483&range=00-01

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/skara/pull/1483.diff
  Fetch: git fetch https://git.openjdk.org/skara pull/1483/head:pull/1483

PR: https://git.openjdk.org/skara/pull/1483