change TestLockPointValidity to take a const reference

The lockpoints are not changed in this function.
There is no reason to pass a pointer.

Author: glozow

src/txmempool.cpp

@@ -73,16 +73,15 @@ struct update_lock_points
     const LockPoints& lp;
 };
 
-bool TestLockPointValidity(CChain& active_chain, const LockPoints* lp)
+bool TestLockPointValidity(CChain& active_chain, const LockPoints& lp)
 {
     AssertLockHeld(cs_main);
-    assert(lp);
     // If there are relative lock times then the maxInputBlock will be set
     // If there are no relative lock times, the LockPoints don't depend on the chain
-    if (lp->maxInputBlock) {
+    if (lp.maxInputBlock) {
         // Check whether active_chain is an extension of the block at which the LockPoints
         // calculation was valid.  If not LockPoints are no longer valid
-        if (!active_chain.Contains(lp->maxInputBlock)) {
+        if (!active_chain.Contains(lp.maxInputBlock)) {
             return false;
         }
     }
@@ -649,8 +648,8 @@ void CTxMemPool::removeForReorg(CChain& chain, std::function<bool(txiter)> check
     }
     RemoveStaged(setAllRemoves, false, MemPoolRemovalReason::REORG);
     for (indexed_transaction_set::const_iterator it = mapTx.begin(); it != mapTx.end(); it++) {
-        LockPoints lp = it->GetLockPoints();
-        if (!TestLockPointValidity(chain, &lp)) {
+        const LockPoints lp{it->GetLockPoints()};
+        if (!TestLockPointValidity(chain, lp)) {
             mapTx.modify(it, update_lock_points(lp));
         }
     }

src/txmempool.h

@@ -53,7 +53,7 @@ struct LockPoints {
 /**
  * Test whether the LockPoints height and time are still valid on the current chain
  */
-bool TestLockPointValidity(CChain& active_chain, const LockPoints* lp) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
+bool TestLockPointValidity(CChain& active_chain, const LockPoints& lp) EXCLUSIVE_LOCKS_REQUIRED(cs_main);
 
 struct CompareIteratorByHash {
     // SFINAE for T where T is either a pointer type (e.g., a txiter) or a reference_wrapper<T>

src/validation.cpp

@@ -357,7 +357,7 @@ void CChainState::MaybeUpdateMempoolForReorg(
         AssertLockHeld(::cs_main);
         const CTransaction& tx = it->GetTx();
         LockPoints lp = it->GetLockPoints();
-        const bool validLP{TestLockPointValidity(m_chain, &lp)};
+        const bool validLP{TestLockPointValidity(m_chain, lp)};
         CCoinsViewMemPool view_mempool(&CoinsTip(), *m_mempool);
         if (!CheckFinalTx(m_chain.Tip(), tx, flags)
             || !CheckSequenceLocks(m_chain.Tip(), view_mempool, tx, flags, &lp, validLP)) {