tree 712238246e8571576dca7f7ba4bd8c1822ddb831
parent 8eac4ae4dabdc96898379c82dc7a92b8d4272778
author Ray Milkey <ray@onlab.us> 1484946467 -0800
committer Ray Milkey <ray@onlab.us> 1484952797 +0000

Fix NPE when a driver has no parents

Change-Id: I15161fdcc89c5f36600fc6df225d42a373724507