blockchain_import: fix wrong reported block/tx hashes on error

src/blockchain_utilities/blockchain_import.cpp

@@ -146,7 +146,7 @@ int check_flush(cryptonote::core &core, std::vector<block_complete_entry> &block
     if (!parse_and_validate_block_from_blob(b.block, block))
     {
       MERROR("Failed to parse block: "
-          << epee::string_tools::pod_to_hex(get_blob_hash(b.block)));
+          << epee::string_tools::buff_to_hex_nodelimer(b.block));
       core.cleanup_handle_incoming_blocks();
       return 1;
     }
@@ -177,8 +177,11 @@ int check_flush(cryptonote::core &core, std::vector<block_complete_entry> &block
       core.handle_incoming_tx(tx_blob, tvc, relay_method::block, true);
       if(tvc.m_verifivation_failed)
       {
-        MERROR("transaction verification failed, tx_id = "
-            << epee::string_tools::pod_to_hex(get_blob_hash(tx_blob.blob)));
+        cryptonote::transaction transaction;
+        if (cryptonote::parse_and_validate_tx_from_blob(tx_blob.blob, transaction))
+          MERROR("Transaction verification failed, tx_id = " << cryptonote::get_transaction_hash(transaction));
+        else
+          MERROR("Transaction verification failed, transaction is unparsable");
         core.cleanup_handle_incoming_blocks();
         return 1;
       }
@@ -192,8 +195,11 @@ int check_flush(cryptonote::core &core, std::vector<block_complete_entry> &block
 
     if(bvc.m_verifivation_failed)
     {
-      MERROR("Block verification failed, id = "
-          << epee::string_tools::pod_to_hex(get_blob_hash(block_entry.block)));
+      cryptonote::block block;
+      if (cryptonote::parse_and_validate_block_from_blob(block_entry.block, block))
+        MERROR("Block verification failed, id = " << cryptonote::get_block_hash(block));
+      else
+        MERROR("Block verification failed, block is unparsable");
       core.cleanup_handle_incoming_blocks();
       return 1;
     }