Apply suggestions from code review

Co-authored-by: Geoffrey White <[email protected]>

Author: aibaars

rust/ql/test/query-tests/security/CWE-022/src/main.rs

@@ -1,5 +1,5 @@
 use poem::{error::InternalServerError, handler, http::StatusCode, web::Query, Error, Result};
-use std::{env::home_dir, fs, path::PathBuf};
+use std::{fs, path::PathBuf};
 
 //#[handler]
 fn tainted_path_handler_bad(
@@ -52,7 +52,7 @@ fn tainted_path_handler_folder_almost_good2(
     let public_path = PathBuf::from("/var/www/public_html");
     let file_path = public_path.join(PathBuf::from(file_path));
     let file_path = file_path.canonicalize().unwrap();
-    // BAD: thecheck to ensure that the path stays within the public folder is wrong
+    // BAD: the check to ensure that the path stays within the public folder is wrong
     if file_path.starts_with(public_path) {
         return Err(Error::from_status(StatusCode::BAD_REQUEST));
     }