Failing to compile will cause blueprint variables to reset to their default values

If a user creates a variable and sets it to a value that is not the default and then gets an error that prevents the blueprint from compiling, this will cause the variable to be reset to it's default value.

1. Open the editor
2. Create a new blueprint
3. Add a new float value
4. Compile
5. Set the Float value's default to 100
6. Compile and save
7. Drag off begin play and add create widget (do not give a class)
8. Notice that when an error is thrown (expected) that the float variable is now set to 0

Expected: The error would not reset the float variable back to 0
Result: The variable's default value it reset to 0 when an unrelated error is thrown

[4.11 preview 2] Blueprints failing to compile resets defaults