Patch for #7170716, crash in OSXAPP_SetApplicationDelegate

[Marco Dinacci]

Hi,

> You don't need to retain blocks when adding them to a collection. The collection implicitly retains them. The blocks will be released once the collection is released.

I know, I'm not suggesting that. I'm saying that those blocks literals
are created on the stack and that you have to copy them if you want to
keep them around. The retain performed by the collection is not
enough.

> The root problem may be that the delegate is getting released, but I'd need to review the surrounding code more carefully to determine that.

the crash normally happens when accessing the block inside the queue.

void (^event)() = (void (^)())[self->queue objectAtIndex: i];

which hints to the fact that the objects inside the array are "gone".

Best,
Marco