Fix compatibility with retroactive C++23 change [NFC]

Referring to capture in parameter list is now ill-formed.
This change is made to prepare for https://reviews.llvm.org/D119136

llvm/include/llvm/CodeGen/LiveInterval.h

@@ -625,10 +625,8 @@ namespace llvm {
         // if the Seg is lower find first segment that is above Idx using binary
         // search
         if (Seg->end <= *Idx) {
-          Seg = std::upper_bound(
-              ++Seg, EndSeg, *Idx,
-              [=](std::remove_reference_t<decltype(*Idx)> V,
-                  const std::remove_reference_t<decltype(*Seg)> &S) {
+          Seg =
+              std::upper_bound(++Seg, EndSeg, *Idx, [=](auto V, const auto &S) {
                 return V < S.end;
               });
           if (Seg == EndSeg)