added ? to returned result

benchmarking/piBas/src/search.rs

@@ -13,7 +13,7 @@ use crypto_utils::hash::hash_with_counter
 //  we are searching in the years of experience colum
 pub fn generateQueries(min: u32, max: u32) -> Result<Vec<String>> {
     let mut queries = Vec::new();
-    let prf_key = load_from_file("prf.key");
+    let prf_key = load_from_file("prf.key")?;
 
     for i in min..=max {
         let scrambled = prf(&prf_key, i.to_string())?;