openpgp: Mark enum Fingerprint as non-exhaustive.

1 files changed, 3 insertions, 0 deletions

diff --git a/openpgp/src/serialize.rs b/openpgp/src/serialize.rs
index a67da09d..9c0c79d9 100644
--- a/openpgp/src/serialize.rs
+++ b/openpgp/src/serialize.rs
@@ -837,6 +837,7 @@ impl MarshalInto for Fingerprint {
         match self {
             Fingerprint::V4(_) => 20,
             Fingerprint::Invalid(ref fp) => fp.len(),
+            Fingerprint::__Nonexhaustive => unreachable!(),
         }
     }
 
@@ -1456,6 +1457,7 @@ impl MarshalInto for SubpacketValue {
                     1 + (fp as &dyn MarshalInto).serialized_len(),
                 // Educated guess for unknown versions.
                 Fingerprint::Invalid(_) => 1 + fp.as_bytes().len(),
+                Fingerprint::__Nonexhaustive => unreachable!(),
             },
             PreferredAEADAlgorithms(ref p) => p.len(),
             IntendedRecipient(ref fp) => match fp {
@@ -1463,6 +1465,7 @@ impl MarshalInto for SubpacketValue {
                     1 + (fp as &dyn MarshalInto).serialized_len(),
                 // Educated guess for unknown versions.
                 Fingerprint::Invalid(_) => 1 + fp.as_bytes().len(),
+                Fingerprint::__Nonexhaustive => unreachable!(),
             },
             Unknown { body, .. } => body.len(),
             __Nonexhaustive => unreachable!(),