Code cleanup.

src/base/tools/cryptonote/BlockTemplate.cpp

@@ -244,32 +244,29 @@ bool xmrig::BlockTemplate::parse(bool hashes)
     ar.skip(m_extraSize);
 
     while (ar_extra.index() < m_extraSize) {
-        uint64_t extra_tag = 0;
+        uint64_t extra_tag  = 0;
+        uint64_t size       = 0;
+
         ar_extra(extra_tag);
 
         switch (extra_tag) {
-        case 0x01: // TX_EXTRA_TAG_PUBKEY
-        {
+        case 0x01: // TX_EXTRA_TAG_PUBKEY        
             setOffset(TX_PUBKEY_OFFSET, offset(TX_EXTRA_OFFSET) + ar_extra.index());
             ar_extra.skip(kKeySize);
             break;
-        }
+
         case 0x02: // TX_EXTRA_NONCE
-            {
-                uint64_t size = 0;
-                ar_extra(size);
-                setOffset(TX_EXTRA_NONCE_OFFSET, offset(TX_EXTRA_OFFSET) + ar_extra.index());
-                ar_extra(m_txExtraNonce, size);
-            }
+            ar_extra(size);
+            setOffset(TX_EXTRA_NONCE_OFFSET, offset(TX_EXTRA_OFFSET) + ar_extra.index());
+            ar_extra(m_txExtraNonce, size);
             break;
+
         case 0x03: // TX_EXTRA_MERGE_MINING_TAG
-        {
-            uint64_t size = 0;
             ar_extra(size);
             setOffset(TX_EXTRA_MERGE_MINING_TAG_OFFSET, offset(TX_EXTRA_OFFSET) + ar_extra.index());
-            ar_extra(m_txMergeMiningTag, size+kKeySize);
+            ar_extra(m_txMergeMiningTag, size + kKeySize);
             break;
-        }
+
         default:
             return false; // TODO(SChernykh): handle other tags
         }