do not explode if the repo key is missing

svenfuchs · svenfuchs · commit c6ea05ec52f1 · 2020-03-24T22:38:28.000+01:00
diff --git a/lib/travis/api/v3/models/repository.rb b/lib/travis/api/v3/models/repository.rb
@@ -145,7 +145,7 @@ def key_pair
     end
 
     def private_key
-      key.private_key
+      key&.private_key
     end
 
     def token
