Apply suggested fix to tests/zip_crypto.rs from Copilot Autofix (#620)

Signed-off-by: Chris Hennick <4961925+Pr0methean@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>

Author: Pr0methean

tests/zip_crypto.rs

@@ -73,9 +73,9 @@ fn test_encrypted_file_operations() {
         // No password
         let file = archive.by_index(0);
         match file {
-            Err(zip::result::ZipError::UnsupportedArchive(
-                zip::result::ZipError::PASSWORD_REQUIRED,
-            )) => (),
+            Err(zip::result::ZipError::UnsupportedArchive(msg)) => {
+                assert_eq!(msg, zip::result::ZipError::PASSWORD_REQUIRED);
+            }
             Err(_) => panic!(
                 "Expected PasswordRequired error when opening encrypted file without password"
             ),