[VASL] NullPointerException

[uckelman]

ABR
Version	3.7.12
Reporter
Error Log	18646 bytes

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VASL v6.6.9-beta2 3.7.12

java.lang.NullPointerException: null
 at java.desktop/javax.swing.SwingUtilities.convertPointToScreen(SwingUtilities.java:445)
 at VASL.build.module.map.ASLPieceMover$DragHandlerNoImage.dragGestureRecognized(ASLPieceMover.java:1605)
 at VASSAL.build.module.Map.lambda$addTo$4(Map.java:974)
 at java.desktop/java.awt.dnd.DragGestureRecognizer.fireDragGestureRecognized(DragGestureRecognizer.java:361)

[derimmer]

transferred to vasl - 1758