X509Util.determineEntityCertificate doesn't catch lower layer SecurityException

I saw a failing test case that I tracked to this loop that checks for a match between a set of certs and a private key parameter. The loop only works if the SecurityHelper.matchKeyPair function doesn't throw, but it's documented as throwing SecurityException. Java 7 seems to throw on a non-matching keypair, which breaks the loop by throwing out.

For this function's purposes, a throw of SecurityException from the match() method is just a false result and the loop should continue by swallowing it.