openpgp: Better handle multiple errors.

  - When `CertParser::next` encounters an error reading the next
    packet, and then encounters an error creating the queued
    certificate, queue the second error, and return the first one.

1 files changed, 4 insertions, 1 deletions

diff --git a/openpgp/src/cert/parser/mod.rs b/openpgp/src/cert/parser/mod.rs
index 2895df29..3657c7d6 100644
--- a/openpgp/src/cert/parser/mod.rs
+++ b/openpgp/src/cert/parser/mod.rs
@@ -1009,7 +1009,10 @@ impl<'a> Iterator for CertParser<'a> {
                                     Ok(None) => {
                                         return Some(Err(err));
                                     }
-                                    Err(err) => {
+                                    Err(err2) => {
+                                        // Return the first error,
+                                        // queue the second error.
+                                        self.queued_error = Some(err2);
                                         return Some(Err(err));
                                     }
                                 }