tree 9a68aefe0c369d5922aa391cacf35d67ed051a85
parent 396f5fe69a008480c50f783228fc70d90937736a
author Edwin Kempin <edwin.kempin@sap.com> 1381502579 +0200
committer Edwin Kempin <edwin.kempin@sap.com> 1381502579 +0200

Do not fail if patch set is not found

If a change ref is updated the plugin expects to find the
corresponding patch set in the database and fails if the patch set
cannot be found in the database.

Add a check for this case and do not fail, but instead ignore this ref
update and write a warning into the log.

This error happens if a change is rebased from the Gerrit WebUI
because Gerrit sends the ref-updated event for the change before it
creates the new patch set in the database.

Change-Id: Ie79fd5abace82a98bbc499031403b90443dcdde7
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>