[clang] [clang][bytecode] Avoid crash in constexpr wcslen on invalid argument… (PR #177891)

[Ayush Kumar Gaur via cfe-commits]

Ayush3941 wrote:

okay deleted that custom file and added the test  to the bottom of clang/test/AST/ByteCode/builtin-functions.cpp

https://github.com/llvm/llvm-project/pull/177891