Meaningful error message if project has no parent in source

Import of All-Projects was failing with an NPE on import of
All-Projects if no parent project in target was specified.

Change-Id: Ia571bd0cca87dcf2fa41e845e05fb5dcf78b3900
1 file changed
tree: 1e07e31b559cb9d2a77665d06f2cf03cb0fb4c76
  1. .settings/
  2. lib/
  3. src/
  4. .buckconfig
  5. .gitignore
  6. BUCK
  7. LICENSE
  8. pom.xml
  9. VERSION