BUG: Fixed shared memory image IO error. See #3788

Due to a copy-paste error a static ITK transform was instantiated,
which broke image IO (probably some static initialization race condition).

From: Andras Lasso <lasso@queensu.ca>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23584 3bd1e089-480b-0410-8dfb-8563597acbee
COMP: Fixes vtkITKTransform classes MacOSX compilation errors. See #3788

From: Steve Pieper <pieper@bwh.harvard.edu>

git-svn-id: http://svn.slicer.org/Slicer4/trunk@23585 3bd1e089-480b-0410-8dfb-8563597acbee