[clang] [Clang][NFC] Const correctness fix for range based for loop (PR #137431)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Shafik Yaghmour (shafik)

<details>
<summary>Changes</summary>

Static analysis flagged that we did not make const a item declaration b/c we did not modify it all during the loop.

---
Full diff: https://github.com/llvm/llvm-project/pull/137431.diff


1 Files Affected:

- (modified) clang/utils/TableGen/ClangBuiltinTemplatesEmitter.cpp (+1-1) 


``````````diff
diff --git a/clang/utils/TableGen/ClangBuiltinTemplatesEmitter.cpp b/clang/utils/TableGen/ClangBuiltinTemplatesEmitter.cpp
index 34bc782e007d5..de79743a06e1f 100644
--- a/clang/utils/TableGen/ClangBuiltinTemplatesEmitter.cpp
+++ b/clang/utils/TableGen/ClangBuiltinTemplatesEmitter.cpp
@@ -107,7 +107,7 @@ ParseTemplateParameterList(ParserState &PS,
   }
 
   bool First = true;
-  for (auto e : Params) {
+  for (const auto &e : Params) {
     if (First) {
       First = false;
       Code << e;

``````````

</details>


https://github.com/llvm/llvm-project/pull/137431