openpgp: Pass MessageStructure by value, not reference.

  - Instead of passing MessageStructure to VerificationHelper::check
    by reference, pass it by value.

  - After calling VerificationHelper::check, it is dropped.  Passing
    it by value allows the caller to avoid some cloning.

1 files changed, 1 insertions, 1 deletions

diff --git a/tool/src/commands/mod.rs b/tool/src/commands/mod.rs
index 12ca6c6a..25b94198 100644
--- a/tool/src/commands/mod.rs
+++ b/tool/src/commands/mod.rs
@@ -356,7 +356,7 @@ impl<'a> VerificationHelper for VHelper<'a> {
         Ok(certs)
     }
 
-    fn check(&mut self, structure: &MessageStructure) -> Result<()> {
+    fn check(&mut self, structure: MessageStructure) -> Result<()> {
         for layer in structure.iter() {
             match layer {
                 MessageLayer::Compression { algo } =>