Fix clippy::string-lit-as-bytes

src/database/sending.rs

@@ -102,7 +102,7 @@ impl Sending {
                         match response {
                             Ok((server, is_appservice)) => {
                                 let mut prefix = if is_appservice {
-                                    "+".as_bytes().to_vec()
+                                    b"+".to_vec()
                                 } else {
                                     Vec::new()
                                 };
@@ -148,7 +148,7 @@ impl Sending {
                             Err((server, is_appservice, e)) => {
                                 info!("Couldn't send transaction to {}\n{}", server, e);
                                 let mut prefix = if is_appservice {
-                                    "+".as_bytes().to_vec()
+                                    b"+".to_vec()
                                 } else {
                                     Vec::new()
                                 };