Rust: Make the Seed case a tiny bit more realistic.

Author: geoffw0

rust/ql/test/query-tests/security/CWE-327/WeakSensitiveDataHashing/CryptographicOperations.expected

@@ -7,6 +7,6 @@
 | test.rs:74:9:74:23 | ...::new(...) | HashingAlgorithm MD5 WEAK  |
 | test.rs:133:26:133:40 | ...::new(...) | HashingAlgorithm MD5 WEAK  |
 | test.rs:156:26:156:40 | ...::new(...) | HashingAlgorithm MD5 WEAK  |
-| test.rs:176:13:176:23 | ...::new(...) | EncryptionAlgorithm SEED   |
+| test.rs:176:13:176:24 | ...::new(...) | EncryptionAlgorithm SEED   |
 | test.rs:199:22:199:32 | ...::new(...) | HashingAlgorithm SHA1 WEAK  |
 | test.rs:211:13:211:35 | ...::compute(...) | HashingAlgorithm MD5 WEAK inputs:1 |

rust/ql/test/query-tests/security/CWE-327/WeakSensitiveDataHashing/test.rs

@@ -165,15 +165,15 @@ struct Seed {
 }
 
 impl Seed {
-    fn new() -> Self {
+    fn new(seed_value: u64) -> Self {
         Seed { }
     }
 }
 
 fn test_seed() {
     // this will be misrecognized as a use of the SEED algorithm, but being a strong
-    // algorithm there is no query result anyway.
-    let _ = Seed::new(); // $ Alert[rust/summary/cryptographic-operations]
+    // algorithm and not sensitive data, there is no query result anyway.
+    let _ = Seed::new(0); // $ Alert[rust/summary/cryptographic-operations]
 }
 
 // ---