OBS: keep going if version can't be parsed

Don't crash in Osmocom_OBS_wireshark because the version can't be
parsed.

Fix for:
  packaging.version.InvalidVersion: Invalid version: '4.1.1rc0.238'

Change-Id: I0cf6c7c2d5939dccc14107f0a8c15593ea8bc4c2
1 file changed