Fix <rdar://problem/6675489> BlockDecl should not use llvm::smallvector.

Also changed BlockDecl API to be more consistent (wrt FunctionDecl).


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@66904 91177308-0d34-0410-b5e6-96231b3b80d8
4 files changed