Fixed memory leak saving bitmaps to disk.
Fixed memory leak saving bitmaps to disk.

svn path=/trunk/libavg/; revision=7504

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