clippy: fix warning from #444

2020-08-02 21:48:26 +02:00
parent 72015da467
commit 8fa66c1e0f
1 changed files with 1 additions and 1 deletions
--- a/src/message/mimebody.rs
+++ b/src/message/mimebody.rs
@@ -209,7 +209,7 @@ fn make_boundary() -> String {
 }

 impl MultiPartKind {
-    fn to_mime<S: AsRef<str>>(self, boundary: Option<S>) -> Mime {
+    fn to_mime<S: AsRef<str>>(&self, boundary: Option<S>) -> Mime {
        let boundary = boundary
            .map(|s| s.as_ref().into())
            .unwrap_or_else(make_boundary);