removed a superfluous getMessage()
removed a superfluous getMessage()

jenkinsci/git-plugin,jenkinsci/git-plugin,recena/git-plugin,MarkEWaite/git-plugin,recena/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,jacob-keller/git-plugin,kzantow/git-plugin,jacob-keller/git-plugin,jenkinsci/git-plugin,recena/git-plugin,kzantow/git-plugin,jacob-keller/git-plugin,kzantow/git-plugin,v1v/git-plugin,MarkEWaite/git-plugin,v1v/git-plugin,martinda/git-plugin,martinda/git-plugin,martinda/git-plugin,MarkEWaite/git-plugin,v1v/git-plugin