fixup! make libstdc++ dereferenced pointer name consistent with libc++

Author: Michael137

lldb/source/Plugins/Language/CPlusPlus/LibStdcppUniquePointer.cpp

@@ -42,8 +42,7 @@ class LibStdcppUniquePtrSyntheticFrontEnd : public SyntheticChildrenFrontEnd {
   // objects are only destroyed when every shared pointer to any of them
   // is destroyed, so we must not store a shared pointer to any ValueObject
   // derived from our backend ValueObject (since we're in the same cluster).
-  ValueObject* m_ptr_obj = nullptr;
-  ValueObject* m_obj_obj = nullptr;
+  ValueObject *m_ptr_obj = nullptr;
   ValueObject* m_del_obj = nullptr;
 
   ValueObjectSP GetTuple();
@@ -107,7 +106,6 @@ lldb::ChildCacheState LibStdcppUniquePtrSyntheticFrontEnd::Update() {
     if (del_obj)
       m_del_obj = del_obj->Clone(ConstString("deleter")).get();
   }
-  m_obj_obj = nullptr;
 
   return lldb::ChildCacheState::eRefetch;
 }
@@ -119,15 +117,13 @@ LibStdcppUniquePtrSyntheticFrontEnd::GetChildAtIndex(uint32_t idx) {
   if (idx == 1 && m_del_obj)
     return m_del_obj->GetSP();
   if (idx == 2) {
-    if (m_ptr_obj && !m_obj_obj) {
-      Status error;
-      ValueObjectSP obj_obj = m_ptr_obj->Dereference(error);
-      if (error.Success()) {
-        m_obj_obj = obj_obj->Clone(ConstString("object")).get();
+    if (m_ptr_obj) {
+      Status status;
+      auto value_sp = m_ptr_obj->Dereference(status);
+      if (status.Success()) {
+        return value_sp;
       }
     }
-    if (m_obj_obj)
-      return m_obj_obj->GetSP();
   }
   return lldb::ValueObjectSP();
 }