Not providing default values for macros can cause memory leaks

Not providing default values for macros can cause memory leaks

1. Download the attached project
2. Open project
3. Open task manager
4. Find the project in processes
5. Press play In Editor
6. Make note of the amount of memory being used over a few seconds
7. Stop Pie
8. Open "LeakyActor"
9. Hook up the output for the right most macro to the set variable (so that it's printing the result of all the macros)
10. PIE again
11. Notice that the memory usage is much higher than before
12. Stop PIE
13. Place default values in the macros
14. PIE again
15. Notice that the rate of memory used has gone back to what it was

Expected: The memory usage would not be going up so drastically
Result: The memory usage is much higher with the macros without defaults

Memory leak with unitialised macros