Fixed AccountsWriter error message logging.
Fixed AccountsWriter error message logging.

ning-yang/compute-image-windows,illfelder/compute-image-windows,adjackura/compute-image-windows,adjackura/compute-image-windows,Derekolds/compute-image-windows,illfelder/compute-image-windows,ning-yang/compute-image-windows,GoogleCloudPlatform/compute-image-windows,GoogleCloudPlatform/compute-image-windows