ports/76613: ffmpeg doesn't build under 5.x or -current

[Frank Mayhar]

It looks like I missed a revision due to having my own changes in the
Makefile.  I rebuilt it from scratch on a 6-current system and it builds
fine.

Never mind, and my apologies for wasting your time.
-- 
Frank Mayhar frank at exit.com	http://www.exit.com/
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