[OWB-771] keep InvocationContext#getTarget around during catch blocks of InvocationContext#proceed,
our InvocationContextImpl is very short-lived already.



git-svn-id: https://svn.apache.org/repos/asf/openwebbeans/branches/owb_1.1.x@1446666 13f79535-47bb-0310-9956-ffa450edef68