[alpha.webkit.RetainPtrCtorAdoptChecker] Check nullity before calling IgnoreParenCasts.#137556

rniwa merged 1 commit intollvm:mainllvm/llvm-project:mainfrom

rniwa:fix-webkit-assert-failure-in-RetainPtrCtorAdoptChecker-isAllocInitrniwa/llvm-project:fix-webkit-assert-failure-in-RetainPtrCtorAdoptChecker-isAllocInitCopy head branch name to clipboard