Restore the empty line after the license (#6088)

substrate/client/transaction-pool/src/api.rs

@@ -15,6 +15,7 @@
 
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 //! Chain api required for the transaction pool.
 
 use std::{marker::PhantomData, pin::Pin, sync::Arc};

substrate/client/transaction-pool/src/error.rs

@@ -15,6 +15,7 @@
 
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 //! Transaction pool error.
 
 use sp_transaction_pool::error::Error as TxPoolError;

substrate/client/transaction-pool/src/lib.rs

@@ -15,6 +15,7 @@
 
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 //! Substrate transaction pool implementation.
 
 #![recursion_limit="256"]

substrate/client/transaction-pool/src/metrics.rs

@@ -15,6 +15,7 @@
 
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 //! Transaction pool Prometheus metrics.
 
 use std::sync::Arc;

substrate/client/transaction-pool/src/revalidation.rs

@@ -15,6 +15,7 @@
 
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 //! Pool periodic revalidation.
 
 use std::{sync::Arc, pin::Pin, collections::{HashMap, HashSet, BTreeMap}};

substrate/client/transaction-pool/src/testing/mod.rs

@@ -15,6 +15,7 @@
 
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 //! Tests for top-level transaction pool api
 
 mod pool;

substrate/client/transaction-pool/src/testing/pool.rs

@@ -15,6 +15,7 @@
 
 // You should have received a copy of the GNU General Public License
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
+
 use crate::*;
 use sp_transaction_pool::TransactionStatus;
 use futures::executor::block_on;