1.7.11 with gzip compression serves incomplete files

[Veiko Kukk]

Hi!

There is not much to add, just that it's been broken before in 1.7.9 and 
is again broken in 1.7.11.  Works with 1.7.10.
When applying patch provided here 
https://www.mail-archive.com/haproxy@formilux.org/msg27155.html 1.7.11 
also works.
Testing is really simple, just configure haproxy gzip compression and 
download with curl --compression or with web browser. Sample .js file I 
have downloaded has real size 42202 bytes but when downloading with gzip 
compression, it's size is 37648 bytes - part of the end is missing.
Very similar issue is discussed here too 
https://discourse.haproxy.org/t/1-7-11-compression-issue-parsing-errors-on-response/2542

Best regards,
Veiko