SuccessChanges

Summary

  1. restore null check, fix for #69698173 on jmriusers (details)
Commit 31da9a0318bfdd0a642db2fd41a9e963f0667f5a by mstevetodd
restore null check, fix for #69698173 on jmriusers
prevents crash described in https://groups.io/g/jmriusers/topic/69698173
The file was modifiedjava/src/jmri/jmrit/display/layoutEditor/ConnectivityUtil.java (diff)