[clang] [NFC][Clang] Introduce type aliases to replace use of auto in clang/lib/CodeGen/CGCall.cpp. (PR #135861)

[Shafik Yaghmour via cfe-commits]

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@@ -712,8 +713,7 @@ CodeGenTypes::arrangeBlockFunctionDeclaration(const FunctionProtoType *proto,
 const CGFunctionInfo &
 CodeGenTypes::arrangeBuiltinFunctionCall(QualType resultType,
                                          const CallArgList &args) {
-  // FIXME: Kill copy.
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shafik wrote:

Did we actually fix the FIXMEs? They were removed but I don't functionally different code. Which makes sense considering the NFC label.

https://github.com/llvm/llvm-project/pull/135861