From 63c56b57a9669a147c2e32c0a6990c4dbe5cdd9e Mon Sep 17 00:00:00 2001
From: "Jeff Washington (jwash)"
 <75863576+jeffwashington@users.noreply.github.com>
Date: Thu, 29 Apr 2021 15:04:28 -0500
Subject: [PATCH] checked_sub_lamports with unwrap (#16922)

* checked_sub_lamports with unwrap

* avoid unwrap
---
 runtime/src/rent_collector.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/runtime/src/rent_collector.rs b/runtime/src/rent_collector.rs
index 3aecf3f274..5d1d8dcd7f 100644
--- a/runtime/src/rent_collector.rs
+++ b/runtime/src/rent_collector.rs
@@ -96,7 +96,7 @@ impl RentCollector {
                                 1
                             },
                     );
-                    account.lamports -= rent_due;
+                    let _ = account.checked_sub_lamports(rent_due); // will not fail. We check above.
                     rent_due
                 } else {
                     let rent_charged = account.lamports();