[clang] Perf/lexer faster slow get char and size (PR #70543)

[via cfe-commits]

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@@ -565,10 +565,9 @@ Scanner::cleanStringIfNeeded(const 
dependency_directives_scan::Token &Tok) {
   const char *BufPtr = Input.begin() + Tok.Offset;
   const char *AfterIdent = Input.begin() + Tok.getEnd();
   while (BufPtr < AfterIdent) {
-    unsigned Size;
-    Spelling[SpellingLength++] =
-        Lexer::getCharAndSizeNoWarn(BufPtr, Size, LangOpts);
-    BufPtr += Size;
+    auto CharAndSize = Lexer::getCharAndSizeNoWarn(BufPtr, LangOpts);
----------------
cor3ntin wrote:

Structured binding here?

https://github.com/llvm/llvm-project/pull/70543
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