"Create Save Game Object" node does not throw an error on compile when no class is selected

When compiling a blueprint the Create Save Game Object nodes does not throw and error when there is no class selected. Throwing an error would be more consistent with other nodes such as the "Create Widget" node that throws an error when there is no class selected.

1. Open Editor
2. Create a new Actor blueprint
3. Open Actor blueprint
4. Drag off of "Event begin play" and create a "Create Save Game Object" node
5. Do not select anything for the class
6. Compile and Save
7. Notice that no error is thrown

Expected: An error would be thrown when no class is selected
Result: No error is thrown