f Add should_persist flag to transaction_unconfirmed

Author: tnull

lightning/src/util/sweep.rs

@@ -667,15 +667,21 @@ where
 			.and_then(|o| o.status.confirmation_height());
 
 		// Unconfirm all >= this height.
+		let mut should_persist = false;
 		state_lock
 			.outputs
 			.iter_mut()
 			.filter(|o| o.status.confirmation_height() >= unconf_height)
-			.for_each(|o| o.status.unconfirmed());
+			.for_each(|o| {
+				should_persist = true;
+				o.status.unconfirmed()
+			});
 
-		self.persist_state(&*state_lock).unwrap_or_else(|e| {
-			log_error!(self.logger, "Error persisting OutputSweeper: {:?}", e);
-		});
+		if should_persist {
+			self.persist_state(&*state_lock).unwrap_or_else(|e| {
+				log_error!(self.logger, "Error persisting OutputSweeper: {:?}", e);
+			});
+		}
 	}
 
 	fn best_block_updated(&self, header: &Header, height: u32) {