NullReferenceException when deleting recipe that is referenced by another recipe.

[NMitchell24]

Describe the bug Null Reference Exception when deleting a Recipe that is referenced by another Recipe. Appears that the RecipeQuantityData is not properly getting deleted. The NullReferenceException occurs on reload of the screen because the ChildRecipe on the RecipeQuantityData is null. This RecipeQuantityData should have been completely deleted.

To Reproduce

1. Steps to reproduce the behavior:
2. File > Open Recipe Configuration
3. Add new Ingredient. Name= 123, Desc = 123
4. save
5. Select Recipe Filter Data Type
6. Add new Filter Name= 123, desc=123
7. save
8. Select Recipe Data Type
9. Add new Recipe, name=123, recipe filter = 123, recipe description = 123
10. Select Recipe Component Type Recipe
11. Then Select recipe component type Ingredient
12. Ingredient Value = 123
13. Quantity = 10
14. Add.
15. Save.
16. Click Add at top of screen
17. Recipe Name = 1234
18. Recipe Filter = 123
19. Recipe Description = 1234
20. Recipe Components; Ingredient, 123, 10 Add
21. Recipe Components; Recipe, 123, 10, add
22. Save
23. Select Data Type Ingredient
24. Select 123 and delete
25. Select Data Type Recipe Filter
26. Select 123 and Delete
27. Select Data Type Recipe
28. Select 123 and Delete
29. NullReferenceException occurs in RecipeService(94)

Expected behavior Deleting recipes that are referenced by other recipes should correctly clear the RecipeQuantityData from any other references and not leave orphaned records.

Affected Versions 2.0.0.0 (RecipeManager_1)

[NMitchell24]

Resolved with Commit 4db3393