Avoid duplicates when storing and unstoring #4
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What do you think about this? It's the safest way I've thought of. It first checks that it is not already in nfw_wounded to avoid duplicates, in case some scenario invokes the same unit id repeatedly.
And then, when doing unstore on the victory event, it is checked that the saved unit was not brought back to life by other methods before the victory event, to avoid conflicts with special events of some scenarios.
This resolves #3 and other potential conflicts.