From 8461df0405474b4ae54cfa13f4dedb046f9185f6 Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Tue, 20 Nov 2018 20:19:39 +0000
Subject: [PATCH] save some database calls when getting top block hash and
 height

---
 src/cryptonote_core/blockchain.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp
index d110cc139..eb3c8d75b 100644
--- a/src/cryptonote_core/blockchain.cpp
+++ b/src/cryptonote_core/blockchain.cpp
@@ -3126,6 +3126,7 @@ bool Blockchain::check_fee(size_t tx_weight, uint64_t fee) const
   if (version >= HF_VERSION_DYNAMIC_FEE)
   {
     median = m_current_block_cumul_weight_limit / 2;
+    const uint64_t blockchain_height = m_db->height();
     already_generated_coins = blockchain_height ? m_db->get_block_already_generated_coins(blockchain_height - 1) : 0;
     if (!get_block_reward(median, 1, already_generated_coins, base_reward, version))
       return false;