Prevent NPE when passing stage without scene to Dialog.initOwner

[Eng-Fouad]

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[Maran23]

Hi, thanks for opening this PR. This is a NPE I also found recently. I can create a ticket for you, you then need to change the title to match the ticket.

But you also need to write a test. Since this NPE seems easy to provoke, it should be relatively straightforward to write one.

[Eng-Fouad]

Hi, thanks for opening this PR. This is a NPE I also found recently. I can create a ticket for you, you then need to change the title to match the ticket.

But you also need to write a test. Since this NPE seems easy to provoke, it should be relatively straightforward to write one.

Yes please, create a ticket and help me on how to write a test.