fixing buffer length

src/main.rs

@@ -25,7 +25,7 @@ const CHARLOTTE: u32 = 14321;
 #[tokio::main]
 async fn main() {
   let mut location_id: u32 = CHARLOTTE;
-  let mut buf = [0, 0, 0, 0];
+  let mut buf = [0; 32];
 
   println!(
     "Enter a location id to override the default (Charlotte, NC, {:?}): ",