Fixed possible crash · vchelaru/FlatRedBall@2deca10

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

Unreachable code detected

The event 'NullableBoolDisplay.PropertyChanged' is never used

Build: Engines/FlatRedBallXNA/FlatRedBall/TimeManager.cs#L676

Unreachable code detected

Build: Engines/FlatRedBallXNA/FlatRedBall/SpriteManager.cs#L1398

'StaticMethodInstruction' is obsolete: 'Use DelegateInstruction or Call on IInstructibles'

Build: Engines/FlatRedBallXNA/FlatRedBall/SpriteManager.cs#L1399

'StaticMethodInstruction' is obsolete: 'Use DelegateInstruction or Call on IInstructibles'

Build: Engines/FlatRedBallXNA/FlatRedBall/Math/Splines/Spline.cs#L589

Unreachable code detected

Build: Engines/FlatRedBallXNA/FlatRedBall/AI/Pathfinding/RectangleNodeNetwork.cs#L132

The variable 'closestNode' is assigned but its value is never used

Build: Engines/FlatRedBallXNA/FlatRedBall/Content/Scene/SpriteSave.cs#L413

'Sprite.PixelSize' is obsolete: 'Use TextureScale'

Build: Engines/FlatRedBallXNA/FlatRedBall/SpriteManager.cs#L2279

'Scene.SpriteGrids' is obsolete

Build: Engines/FlatRedBallXNA/FlatRedBall/SpriteManager.cs#L2281

'Scene.SpriteGrids' is obsolete

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