[llvm] CMake: Fix LLVM_ENABLE_DEBUGLOC_COVERAGE_TRACKING in reentrancy situa… (PR #144331)

[Slava Zakharin via llvm-commits]

vzakhari wrote:

@umangyadav please let me know if you are going to merge this after the CI finishes.  I can do it myself as well. 

https://github.com/llvm/llvm-project/pull/144331