validation: Use *this in CChainState::ActivateBestChainStep

Author: dongcarl

src/validation.cpp

@@ -2725,6 +2725,7 @@ bool CChainState::ActivateBestChainStep(BlockValidationState& state, const CChai
 {
     AssertLockHeld(cs_main);
     AssertLockHeld(m_mempool.cs);
+    assert(std::addressof(::ChainstateActive()) == std::addressof(*this));
 
     const CBlockIndex* pindexOldTip = m_chain.Tip();
     const CBlockIndex* pindexFork = m_chain.FindFork(pindexMostWork);
@@ -2736,7 +2737,7 @@ bool CChainState::ActivateBestChainStep(BlockValidationState& state, const CChai
         if (!DisconnectTip(state, chainparams, &disconnectpool)) {
             // This is likely a fatal error, but keep the mempool consistent,
             // just in case. Only remove from the mempool in this case.
-            UpdateMempoolForReorg(::ChainstateActive(), m_mempool, disconnectpool, false);
+            UpdateMempoolForReorg(*this, m_mempool, disconnectpool, false);
 
             // If we're unable to disconnect a block during normal operation,
             // then that is a failure of our local system -- we should abort
@@ -2780,7 +2781,7 @@ bool CChainState::ActivateBestChainStep(BlockValidationState& state, const CChai
                     // A system error occurred (disk space, database error, ...).
                     // Make the mempool consistent with the current tip, just in case
                     // any observers try to use it before shutdown.
-                    UpdateMempoolForReorg(::ChainstateActive(), m_mempool, disconnectpool, false);
+                    UpdateMempoolForReorg(*this, m_mempool, disconnectpool, false);
                     return false;
                 }
             } else {
@@ -2797,7 +2798,7 @@ bool CChainState::ActivateBestChainStep(BlockValidationState& state, const CChai
     if (fBlocksDisconnected) {
         // If any blocks were disconnected, disconnectpool may be non empty.  Add
         // any disconnected transactions back to the mempool.
-        UpdateMempoolForReorg(::ChainstateActive(), m_mempool, disconnectpool, true);
+        UpdateMempoolForReorg(*this, m_mempool, disconnectpool, true);
     }
     m_mempool.check(*this);