Renaming linux-c6-gdk-pixbuf to linux-c6-gdk-pixbuf2 in category to unbreak
INDEX.

Spotted by:	cperciva
Approved by:	swills (mentor)


git-svn-id: svn+ssh://svn.freebsd.org/ports/head@373193 35697150-7ecd-e111-bb59-0022644237b5