FYI: Catch exceptions caused by trying to look up issues during jcheck

[Robin Westberg]

Hi all,

Please review this small fix that catches exceptions that occur when trying to lookup information on Jira issues during
a check run, as the information is only used for informational purposes.

Best regards,
Robin

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Commit messages:
 - Catch exceptions caused by trying to look up issues during jcheck

Changes: https://git.openjdk.java.net/skara/pull/543/files
 Webrev: https://webrevs.openjdk.java.net/skara/543/webrev.00
  Stats: 18 lines in 1 file changed: 7 ins; 1 del; 10 mod
  Patch: https://git.openjdk.java.net/skara/pull/543.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/543/head:pull/543

PR: https://git.openjdk.java.net/skara/pull/543