Update third-party rtmp module from 1.1.4 to 1.1.5.
Fix compilation issue (1).
Do not bump PORTREVISION.

Obtained from:	https://github.com/arut/nginx-rtmp-module/commit/dd5f2aa117c617e1f0fde26f8fd58903be2d85e8.patch	(1)


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@368537 35697150-7ecd-e111-bb59-0022644237b5