Fixed error if request len is 0

src/main.rs

@@ -56,13 +56,13 @@ fn handle_connection(mut stream: TcpStream, root_dir: String) {
     let request =  String::from_utf8_lossy(&buffer[..]);
     let parsed_request: Vec<&str> = request.split(' ').collect();
     let  _post: Vec<&str> = request.split('\n').collect();
-    let _post = _post[1].to_string();
     if parsed_request.len() != 3 {
         let status_line = "5 Request error";
         send_response(status_line, "".to_string(), stream);
         return;
     }
 
+    let _post = _post[1].to_string();
     let _host = parsed_request[0];
     let _path = parsed_request[1];
     let _post_len = parsed_request[2];