Fix bytes leak on retry

core/src/banking_stage/transaction_scheduler/prio_graph_scheduler.rs

@@ -358,6 +358,11 @@ impl<Tx: TransactionWithMeta> PrioGraphScheduler<Tx> {
                             continue;
                         }
                     }
+                    // Transaction must be dropped before removing, since we
+                    // currently have ownership of the transaction, and
+                    // therefore may have a reference to the backing-memory
+                    // that the container expects to be free.
+                    drop(transaction);
                     container.remove_by_id(id);
                 }