osconfig_tests: fix nil pointer bug (#819)
osconfig_tests: fix nil pointer bug (#819)


zmarano/compute-image-tools,GoogleCloudPlatform/compute-image-import,adjackura/compute-image-tools,GoogleCloudPlatform/compute-image-tools,GoogleCloudPlatform/compute-image-tools,GoogleCloudPlatform/compute-image-tools,zmarano/compute-image-tools,adjackura/compute-image-tools,GoogleCloudPlatform/compute-daisy,GoogleCloudPlatform/compute-daisy,GoogleCloudPlatform/compute-image-import,zmarano/compute-image-tools,GoogleCloudPlatform/compute-image-import,adjackura/compute-image-tools