[clang] [clang]Avoid to check created local variable multiple time when evaluating (PR #69106)

[Congcong Cai via cfe-commits]

HerrCai0907 wrote:

> I test example in branch llvmorg-16.0.6,ExprConstant.cpp also has this assertion but it will not result in crash.

Have you find the exact commit to break this case? @mzyKi 

https://github.com/llvm/llvm-project/pull/69106