Supressed errors

src/SDL2.cs

···
 #if NET6_0_OR_GREATER
 		internal static T PtrToStructure<[DynamicallyAccessedMembers(DynamicallyAccessedMemberTypes.PublicConstructors | DynamicallyAccessedMemberTypes.NonPublicConstructors)] T>(IntPtr ptr)
 		{
-			return Marshal.PtrToStructure<T>(ptr);
+			return Marshal.PtrToStructure<T>(ptr)!;
 		}
 
 		internal static T GetDelegateForFunctionPointer<T>(IntPtr ptr) where T : Delegate
···
 		{
 			if (s == IntPtr.Zero)
 			{
-				return null;
+				return null!;
 			}
 
 			/* We get to do strlen ourselves! */
···
 			}
 			else
 			{
-				callback = null;
+				callback = null!;
 			}
 		}
 
···
 			}
 			else
 			{
-				filter = null;
+				filter = null!;
 			}
 			return retval;
 		}