Fix nasty bug in options handling for gzipped files.
Fix nasty bug in options handling for gzipped files.

chen1i/cloudfront_asset_host,chen1i/cloudfront_asset_host,menno/cloudfront_asset_host,chen1i/cloudfront_asset_host,quadule/cloudfront_asset_host,menno/cloudfront_asset_host,quadule/cloudfront_asset_host