refactor(lib): use to_owned to clarify the purpose

Author: tottoto

src/status.rs

@@ -267,7 +267,7 @@ impl FromStr for StatusCode {
 impl<'a> From<&'a StatusCode> for StatusCode {
     #[inline]
     fn from(t: &'a StatusCode) -> Self {
-        t.clone()
+        t.to_owned()
     }
 }