[libcxxabi] [libunwind] [libunwind][AIX] Handle VAPI-based return addresses in stack unwinding for LLU (PR #209280)

[Jon Roelofs via cfe-commits]

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@@ -1393,13 +1399,13 @@ UnwindCursor<A, R>::UnwindCursor(unw_context_t *context, A &as)
 
 template <typename A, typename R>
 UnwindCursor<A, R>::UnwindCursor(A &as, void *)
-    : _addressSpace(as), _unwindInfoMissing(false), _isSignalFrame(false) {
+    : _addressSpace(as), _unwindInfoMissing(false), _isSignalFrame(false),
+      _isKnownVapiNotActive(false) {
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jroelofs wrote:

likewise

https://github.com/llvm/llvm-project/pull/209280