melib: return raw body instead of headers in MaildirOp::fetch_body

melib/src/backends/maildir.rs

@@ -99,7 +99,7 @@ impl<'a> BackendOp for MaildirOp {
     }
     fn fetch_body(&mut self) -> Result<&[u8]> {
         let raw = self.as_bytes()?;
-        let result = parser::headers_raw(raw).to_full_result()?;
+        let result = parser::body_raw(raw).to_full_result()?;
         Ok(result)
     }
     fn fetch_flags(&self) -> Flag {