[clang] [StaticAnalyzer] Relax the pre-condition of 'setsockopt' (PR #130683)

[Gábor Horváth via cfe-commits]

Xazax-hun wrote:

This change looks good to me. I think you could open PRs for the questions you brought up and we could sort them out in the review process. 

https://github.com/llvm/llvm-project/pull/130683