video branch: Windows warning fix.
video branch: Windows warning fix.

svn path=/branches/libavg_video/; revision=8658

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