Cocoa integration: do not use released session

QTBUG_10735_crashWithDialog started to show flakyness recently - it crashes,
but not every time (which fits the definition of UB perfectly).

While the test itself is doing weird things and puts our event dispatcher
into a weird state, our API allows to:

1. Using QDialog to enter event loop (with runModalSession under the hood), then ...
2. to call from a slot (e.g. timer-attached) QApplication::closeAllWindows() while ...
3. we are still inside that special loop and using the 'session' object, thus ...
4. on the next iteration with [NSApp runModalSession:session] we'll re-use already released
   session (released by endModalSession which in turn was called indirectly by closeAllWindows).

And Cocoa gives us a warning/hint: "Use of freed session detected. Do not call
runModalSession: after calling endModalSesion:."

Task-number: QTBUG-62589
Change-Id: Ie651cee1fba43cfd2b0fc44af5eddc5fd52e2907
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@qt.io>

0 files changed, 0 insertions, 0 deletions