Segfault on addSelectionListener() and addVisibilityListener()

[dyhl]

Example code from addSelectionListener() and addVisibilityListener() segfaults.

Looks like it's because of code in src/omega/omegaPythonApi.cpp:

SceneNode* node = (SceneNode*)PyCapsule_GetPointer(pyNode, "node"); This evaluates to NULL regardless of pyNode type.

This then causes node->addListener(listener); to segfault

[febret]

Thank you for the report