Fixed bug with anims that have zero duration.
Fixed bug with anims that have zero duration.

svn path=/trunk/libavg/; revision=3731

libavg/libavg,scotty007/libavg,th3infinity/libavg,scotty007/libavg,libavg/libavg,th3infinity/libavg,hoodie/libavg,libavg/libavg,yyd01245/libavg,hoodie/libavg,yyd01245/libavg,th3infinity/libavg,scotty007/libavg,scotty007/libavg,hoodie/libavg,th3infinity/libavg,yyd01245/libavg,yyd01245/libavg,libavg/libavg,hoodie/libavg