Fix corner case.

  - When armoring data of size zero, make sure that the header is
    written even if 'write' is never called.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/armor.rs b/src/armor.rs
index 349b1d99..e070d2ab 100644
--- a/src/armor.rs
+++ b/src/armor.rs
@@ -120,6 +120,7 @@ impl<'a, W: Write> Writer<'a, W> {
     /// call.  If this is not called explicitly, the header is written
     /// once the writer is dropped.
     pub fn finalize(&mut self) -> Result<(), Error> {
+        self.initialize()?;
         if self.finalized {
             return Err(Error::new(ErrorKind::BrokenPipe, "Writer is finalized."));
         }