NPE in SclUtilities.getAnyLN() if lnInst is null

There is an @NonNull annotation on the parameter, but annotation-based null analysis is not enabled (to many changes are needed if this is enabled)

created merge request !62 (merged) to address this issue

mentioned in merge request !62 (merged)

closed via merge request !62 (merged)

mentioned in commit 0b651ac3