BUG: Fix X Error during shutdown on Linux
On Linux occasionally during shutdown of an iMSTK app, the following error would appear:
X Error of failed request: BadWindow (invalid Window parameter)
I believe this error came from trying to run another iren->ProcessEvents call after Finalizing the vtkRenderWindow (which destroys the X Window on Linux).
After moving the Finalize call on the vtkRenderWindow to after the final ProcessEvents, I have not seen the error through repeated runs of the same application I originally saw the error on.
@harald.scheirich @andrew.wilson I have not tested this change on Windows or Mac. If you could run this change through its paces on those platforms, I would appreciate it.