Fix null pointer dereference in graph editor #371
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When right clicking while dragging onto nothing, the selected node gets set to NULL, but the node rendering assumes the selected node to be valid during a drag. The drag is now just canceled on a right click. Signed-off-by: Robin Ole Heinemann <robin.ole.heinemann@gmail.com>
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When right clicking while dragging onto nothing, the selected node gets
set to NULL, but the node rendering assumes the selected node to be
valid during a drag.
The drag is now just canceled on a right click.