Changes with nginx 1.17.7 24 Dec 2019
*) Bugfix: a segmentation fault might occur on start or during reconfiguration if the "rewrite" directive with an empty replacement string was used in the configuration.
*) Bugfix: a segmentation fault might occur in a worker process if the "break" directive was used with the "alias" directive or with the "proxy_pass" directive with a URI.
*) Bugfix: the "Location" response header line might contain garbage if the request URI was rewritten to the one containing a null character.
*) Bugfix: requests with bodies were handled incorrectly when returning redirections with the "error_page" directive; the bug had appeared in 0.7.12.
*) Bugfix: socket leak when using HTTP/2.
*) Bugfix: a timeout might occur while handling pipelined requests in an SSL connection; the bug had appeared in 1.17.5.
*) Bugfix: in the ngx_http_dav_module.