cryptonote: set tx hash on newly parsed txes when known

src/cryptonote_basic/cryptonote_format_utils.cpp

@@ -184,6 +184,7 @@ namespace cryptonote
     CHECK_AND_ASSERT_MES(r, false, "Failed to parse transaction from blob");
     CHECK_AND_ASSERT_MES(expand_transaction_1(tx, false), false, "Failed to expand transaction data");
     tx.invalidate_hashes();
+    tx.set_blob_size(tx_blob.size());
     return true;
   }
   //---------------------------------------------------------------