Update controller/src/test/java/org/jboss/as/controller/interfaces/Inter...

...faceCriteriaTestUtil.java

NICs without a cable attached are 'up' in Windows (isUp() returns true), but return a NULL address. That causes an NPE in some tests (in this same file, line 116, from e.g. OverallInterfaceCriteriaUnitTestCase.testMultipleCriteria() )
This patch prevents adding NULL addresses.

A workaround is to disable network interfaces with no cable attached.