[clang] [Sema] Fix computations of "unexpanded packs" in substituted lambdas (PR #99882)

[via cfe-commits]

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@@ -4854,15 +4855,7 @@ class CXXFoldExpr : public Expr {
   CXXFoldExpr(QualType T, UnresolvedLookupExpr *Callee,
               SourceLocation LParenLoc, Expr *LHS, BinaryOperatorKind Opcode,
               SourceLocation EllipsisLoc, Expr *RHS, SourceLocation RParenLoc,
-              std::optional<unsigned> NumExpansions)
-      : Expr(CXXFoldExprClass, T, VK_PRValue, OK_Ordinary),
-        LParenLoc(LParenLoc), EllipsisLoc(EllipsisLoc), RParenLoc(RParenLoc),
-        NumExpansions(NumExpansions ? *NumExpansions + 1 : 0), Opcode(Opcode) {
-    SubExprs[SubExpr::Callee] = Callee;
-    SubExprs[SubExpr::LHS] = LHS;
-    SubExprs[SubExpr::RHS] = RHS;
-    setDependence(computeDependence(this));
-  }
+              std::optional<unsigned> NumExpansions);
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cor3ntin wrote:

This change is completely unrelated, feel free to make an NFC patch for that

https://github.com/llvm/llvm-project/pull/99882