Check_MK Werk 4507: Non resolvable hosts may lead to config compilation error

ID: 4507 Title: Non resolvable hosts may lead to config compilation error Component: Core & setup Level: 1 Class: Bug fix Version: 1.5.0i1 When having hosts without host address configured and compiling the config of the core while the host can not be resolved, this may lead to an excception: AttributeError: 'NoneType' object has no attribute 'strip' This has been fixed now.