chore: code cleanup

src/BusProNet/ApiClientTrait.php

@@ -54,7 +54,7 @@ trait ApiClientTrait
     private function send($socket, string $data): void
     {
         // message length is prepended to actual message
-        $send = sprintf('%010s', strlen($data)) . $data;
+        $send = sprintf('%010s', strlen($data)).$data;
         fwrite($socket, $send);
     }
 
@@ -73,4 +73,4 @@ trait ApiClientTrait
     {
         @fclose($socket);
     }
-}
+}