Added null checking for error action exception for scenarios when an exception is handled but transaction still fails to commit resulting in a possible NullReferenceException.
Added null checking for error action exception for scenarios when an exception is handled but transaction still fails to commit resulting in a possible NullReferenceException.

git-svn-id: 6eea8ec865c4fa60105bc56808c028bdcf72a817@2162 079b0acf-d9fa-0310-9935-e5ade295c882

hibernating-rhinos/rhino-esb,ketiko/rhino-esb,jkells/rhino-esb