In a forward declaration, use whether a type was actually declared as a struct or class. This makes Clang happier.
In a forward declaration, use whether a type was actually declared as
a struct or class. This makes Clang happier.


git-svn-id: 31d9d2f6432a47c86a3640814024c107794ea77c@24161 0785d39b-7218-0410-832d-ea1e28bc413d

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