[GEM-dev] pix_coordinate postrender changes

[chris clepper]

Hi

I commented out the two lines in the postrender method of
pix_coordinate and this resolves the memory leak when using
[separator] with it.  I have not run into any negative side effects
for this, but it did enable me to replace 12 640x480 texture uploads
with 3 for a recent project.  Please test the change yourselves.

cgc