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PatTheMav
27ba216271
When an external display is disconnected with a fullscreen projector attached to it, Qt will trigger a resize of the window twice, which makes the renderer queue 2 resize event blocks. At the time when those blocks are run, Qt's window destructor will have reset all pointers, and the block directly accesses pointers within structures identified by pointers, which are invalid by that point. This commit makes a block return early if the associated window has been destroyed already and also explicitly checks for valid pointers after.