[clang] [Clang] [Sema] Fix bug in `_Complex float`+`int` arithmetic (PR #83063)

[Joshua Cranmer via cfe-commits]

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@@ -1114,8 +1114,6 @@ static bool handleIntegerToComplexFloatConversion(Sema &S, ExprResult &IntExpr,
   if (IntTy->isIntegerType()) {
     QualType fpTy = ComplexTy->castAs<ComplexType>()->getElementType();
     IntExpr = S.ImpCastExprToType(IntExpr.get(), fpTy, CK_IntegralToFloating);
-    IntExpr = S.ImpCastExprToType(IntExpr.get(), ComplexTy,
-                                  CK_FloatingRealToComplex);
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jcranmer-intel wrote:

This change makes the comment on this method and the comment in `handleComplexConversion` inaccurate; it would be a good idea to update those comments to indicate what is actually happening here.

https://github.com/llvm/llvm-project/pull/83063