cargo clippy/fix

kordophone-db/src/models/message.rs

@@ -47,6 +47,12 @@ pub struct MessageBuilder {
     date: Option<NaiveDateTime>,
 }
 
+impl Default for MessageBuilder {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl MessageBuilder {
     pub fn new() -> Self {
         Self {