Fixed Problems with this method if setGraphics was never called

[MSementsov-Ibk]

...and there was no run

Signed-off-by: Michael Sementsov michael.sementsov@ibykus.de

[fgdrf]

Ate the moment I do not understand how the description of this changeset is related to modified lines. Change indicates that is a safer implemantation which checks for null first before removing listeners.

Is it possible the not all changes were added to the commit?

[MSementsov-Ibk]

Sorry for the wonky description, what I meant is:

If setGraphics (AbstractDrawCommand.setGraphics(), in the superclass to MessageBubble) was never called, then a display was never registered and therefore there are also no Listeneres for setValid to remove.

It's a change from a while ago, so I can't say where I encountered this calling order, I'll post it here when I find it again.

[fgdrf]

If there is a chance that display isn't set yet, run method should implement a safe-check as well.

I'll have a look at and provide a pull to contribute to your change, stay tuned