[lldb][test] Fix TestClangModulesDeclLookup

[slydiman]

The commit 05547fc broke the buildbot lldb-remote-linux-win

@Michael137, can you use the PR procedure on github, please?

[llvmbot]

@llvm/issue-subscribers-lldb

Author: Dmitry Vasilyev (slydiman)

The commit https://github.com/llvm/llvm-project/commit/05547fc3ec803b779beefeb52d21ef76cf00413f broke the buildbot [lldb-remote-linux-win](https://lab.llvm.org/buildbot/#/builders/197/builds/6187)

@Michael137, can you use the PR procedure on github, please?