Following 9fc6c3c897, the OOS debugSerializer would try to serialize AI
objects entirely. This is extremely slow (might be an infinite loop in
some cases).
Instead, it should print the result of Serialize() in those cases.
(The original idea was that it would print more debugging information,
but in practice it seems to mostly print things that show up when
diffing but aren't actually sources of OOS, so essentially garbage).
Fixes#5917
Differential Revision: https://code.wildfiregames.com/D3361
This was SVN commit r24641.
wraitii
e2ff38453f