[clang] [clang-repl] Always clean up scope and context for TopLevelStmtDecl (PR #150215)

[Vassil Vassilev via cfe-commits]

https://github.com/vgvassilev approved this pull request.

LGTM! @devajithvs, do you have commit access or should I merge?

https://github.com/llvm/llvm-project/pull/150215