tests ~ fix cargo clippy complaint (*allow* clippy::redundant_clone)

tests/integration_test.rs

@@ -48,6 +48,7 @@ fn platform_no_invisible_contents() -> Result<(), String> {
 #[test]
 fn platform_clone() -> Result<(), String> {
     let info = PlatformInfo::new().unwrap();
+    #[allow(clippy::redundant_clone)] // ignore `clippy::redundant_clone` warning for direct testing
     let info_copy = info.clone();
     println!("{:?}", info);
     assert_eq!(info_copy, info);