chore: clean relative to references and borrows

- lint message: the borrowed expression implements the required traits
help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.92.0/index.html#needless_borrows_for_generic_args
- lint message: this expression creates a reference which is immediately dereferenced by the compiler
help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.92.0/index.html#needless_borrow
- lint message: you don't need to add `&` to all patterns
help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.92.0/index.html#match_ref_pat
- remove useless taken reference
lint message: needlessly taken reference of left operand
help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.92.0/index.html#op_ref
- use &Path instead of &PathBuf as fn parameters
lint message: writing `&PathBuf` instead of `&Path` involves a new object where a slice will do
help: for further information visit https://rust-lang.github.io/rust-clippy/rust-1.92.0/index.html#ptr_arg

src/block/rc.rs

@@ -89,7 +89,7 @@ impl BlockRc {
 				.transaction(|tx| {
 					let mut cnt = 0;
 					for f in recalc_fns.iter() {
-						cnt += f(&tx, hash)?;
+						cnt += f(tx, hash)?;
 					}
 					let old_rc = RcEntry::parse_opt(tx.get(&self.rc_table, hash)?);
 					trace!(