[libunwind] [PAC][libunwind] Pass ptrauth-qualified values as const references (PR #173765)

[Oliver Hunt via cfe-commits]

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@@ -2842,7 +2845,7 @@ void UnwindCursor<A, R>::setInfoBasedOnIPRegister(bool isReturnAddress) {
   // Lastly, ask AddressSpace object about platform specific ways to locate
   // other FDEs.
   pint_t fde;
-  if (_addressSpace.findOtherFDE(pc, fde)) {
+  if (_addressSpace.template findOtherFDE<R>(pc, fde)) {
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ojhunt wrote:

ugh, there are times I really hate C++

https://github.com/llvm/llvm-project/pull/173765