fix locks

libraries/core_libs/consensus/src/pillar_chain/pillar_chain_manager.cpp

@@ -109,10 +109,11 @@ std::shared_ptr<PillarBlock> PillarChainManager::createPillarBlock(
 void PillarChainManager::saveNewPillarBlock(const std::shared_ptr<PillarBlock>& pillar_block,
                                             std::vector<state_api::ValidatorVoteCount>&& new_vote_counts) {
   db_->saveCurrentPillarBlockData({pillar_block, new_vote_counts});
-
-  std::scoped_lock<std::shared_mutex> lock(mutex_);
-  current_pillar_block_ = pillar_block;
-  current_pillar_block_vote_counts_ = std::move(new_vote_counts);
+  {
+    std::scoped_lock<std::shared_mutex> lock(mutex_);
+    current_pillar_block_ = pillar_block;
+    current_pillar_block_vote_counts_ = std::move(new_vote_counts);
+  }
 }
 
 std::shared_ptr<PillarVote> PillarChainManager::genAndPlacePillarVote(PbftPeriod period,
@@ -332,7 +333,6 @@ bool PillarChainManager::isValidPillarBlock(const std::shared_ptr<PillarBlock>&
   }
 
   const auto last_finalized_pillar_block = getLastFinalizedPillarBlock();
-  std::shared_lock<std::shared_mutex> lock(mutex_);
   assert(last_finalized_pillar_block);
 
   // Check if some block was not skipped