Lint: Use lazy evaluation.

  - https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call

1 files changed, 1 insertions, 1 deletions

diff --git a/openpgp/src/policy.rs b/openpgp/src/policy.rs
index bb86c631..c915d06d 100644
--- a/openpgp/src/policy.rs
+++ b/openpgp/src/policy.rs
@@ -765,7 +765,7 @@ fn system_time_cutoff_to_timestamp(t: SystemTime) -> Option<Timestamp> {
         // An error can only occur if the SystemTime is less than the
         // reference time (SystemTime::UNIX_EPOCH).  Map that to
         // SystemTime::UNIX_EPOCH, as above.
-        .unwrap_or(Duration::new(0, 0));
+        .unwrap_or_else(|_| Duration::new(0, 0));
     let t = t.as_secs();
     if t > u32::MAX as u64 {
         // Map to None, as above.