trivial fixes for scons compilation on ubuntu 6.06.2 LTS with scons 2.0.1

commit b70638b3ce5348b7d8dd3c93980c03cea6af535c
Author: Michael Brenden <mike@brenden.com>
Date:   Sat Feb 12 01:11:39 2011 -0500

    initialized vars "size" and "toDrain", to fix scons compile failures on Ubuntu 6.06.2 LTS with scons 2.0.1