ports/169005: multimedia/mjpegtools: Fix build with GTK2 option

[sylvio at FreeBSD.org]

Synopsis: multimedia/mjpegtools: Fix build with GTK2 option

Responsible-Changed-From-To: freebsd-ports-bugs->sylvio
Responsible-Changed-By: sylvio
Responsible-Changed-When: Tue Jun 12 20:42:07 UTC 2012
Responsible-Changed-Why: 
I'll take it.

http://www.freebsd.org/cgi/query-pr.cgi?pr=169005