Entity tags: empty etags handling in If-Range.
Entity tags: empty etags handling in If-Range.

Entity tag may be of length 2 as per RFC 2616, i.e. double quotes only.
Pointed out by Ruslan Ermilov.

firebase/nginx,hy0kl/nginx,firebase/nginx,firebase/nginx,hy0kl/nginx,hy0kl/nginx,firebase/nginx