using .clone() on a double reference

[rrupy]

• Rust version : rustc 1.75.0-nightly (42b1224e9 2023-10-15)
• nom version : 7.1.2

cargo check reports warnings:

• using '.clone()' on a double reference, which returns '&[u8]' instead of cloning the inner type in src/traits.rs:336:32 and src/traits.rs:344:36
• using '.clone()' on a double reference, which returns '&str' instead of cloning the inner type in src/traits.rs:533:32 and src/traits.rs:533:32

[krtab]

(this warning appeared in Rust 1.71)