From d91f9767bbf93e0def0a336a7aaf5ca984aeba81 Mon Sep 17 00:00:00 2001
From: William Woodruff <william@trailofbits.com>
Date: Tue, 24 Oct 2023 18:28:25 -0500
Subject: [PATCH] policy: clippage

Signed-off-by: William Woodruff <william@trailofbits.com>
---
 src/rust/cryptography-x509-validation/src/policy/mod.rs | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/rust/cryptography-x509-validation/src/policy/mod.rs b/src/rust/cryptography-x509-validation/src/policy/mod.rs
index b7a3cd7d8aec..795e00bd24b2 100644
--- a/src/rust/cryptography-x509-validation/src/policy/mod.rs
+++ b/src/rust/cryptography-x509-validation/src/policy/mod.rs
@@ -369,11 +369,12 @@ impl<'a, B: CryptoOps> Policy<'a, B> {
             .chain(self.ee_extension_policies.iter())
             .map(|p| p.oid.clone())
             .collect::<HashSet<_>>();
-        let unchecked_extensions = critical_extensions
-            .difference(&checked_extensions)
-            .collect::<Vec<_>>();
 
-        if !unchecked_extensions.is_empty() {
+        if !critical_extensions
+            .difference(&checked_extensions)
+            .next()
+            .is_none()
+        {
             // TODO: Render the OIDs here.
             return Err("certificate contains unaccounted-for critical extensions".into());
         }