tx_pool: pre-init tvc.m_verifivation_failed before processing

CID 175316

src/cryptonote_core/tx_pool.cpp

@@ -202,6 +202,9 @@ namespace cryptonote
       return false;
     }
 
+    // assume failure during verification steps until success is certain
+    tvc.m_verifivation_failed = true;
+
     time_t receive_time = time(nullptr);
 
     crypto::hash max_used_block_id = null_hash;
@@ -285,9 +288,6 @@ namespace cryptonote
         tvc.m_should_be_relayed = true;
     }
 
-    // assume failure during verification steps until success is certain
-    tvc.m_verifivation_failed = true;
-
     tvc.m_verifivation_failed = false;
 
     MINFO("Transaction added to pool: txid " << id << " bytes: " << blob_size << " fee/byte: " << (fee / (double)blob_size));