Log Message:
transmission*: Fix security issue

Fix a weakness that allows remote code execution via the Transmission
RPC server using DNS rebinding:

https://bugs.chromium.org/p/project-zero/issues/detail?id=1447

Patch adapted from Tavis Ormandy's patch on the Transmission master
branch to the Transmission 2.92 release by Leo Famulari
<leo@famulari.name>:

https://github.com/transmission/transmission/pull/468/commits

Via FreeBSD ports.

Bump PKGREVISION.