Fixed spurious exception for empty words nodes.
Fixed spurious exception for empty words nodes.

svn path=/trunk/libavg/; revision=6571

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