Call GC.SuppressFinalize() from Dispose().

GitOrigin-RevId: 57b1d3760a781966e3dd673970b535bb8cade1a2

Shared/LinesOfSight.cs

@@ -30,6 +30,7 @@ namespace SemiColinGames {
     public void Dispose() {
       vertexBuffer.Dispose();
       indexBuffer.Dispose();
+      GC.SuppressFinalize(this);
     }
 
     public void Update(Player player, AABB[] collisionTargets) {

Shared/Scene.cs

@@ -45,6 +45,7 @@ namespace SemiColinGames {
       lightingTarget.Dispose();
       lightingEffect.Dispose();
       spriteBatch.Dispose();
+      GC.SuppressFinalize(this);
     }
 
     public void Draw(World world, Player player, LinesOfSight linesOfSight) {