[llvm] [llvm] Fix: DebuginfodTests must link libHTTP after 789f30c73ef4 (PR #192225)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

> @mstorsjo I hope it's working on mingw this time?

Yes, I don't see any issues relating to this (at least after this fix has been landed). But I think this issue possibly only shows up with `BUILD_SHARED_LIBS` anyway.

https://github.com/llvm/llvm-project/pull/192225