[clippy] Pass a few argument types by value, not by reference;

Since Location is basically just a usize, and wasmparser::Type is an
enum, and both are copiable, this passes them down by value instead of
by reference, as suggested by Clippy.

lib/reader/src/isaspec.rs

@@ -35,7 +35,7 @@ impl IsaSpec {
 }
 
 /// Parse an iterator of command line options and apply them to `config`.
-pub fn parse_options<'a, I>(iter: I, config: &mut Configurable, loc: &Location) -> ParseResult<()>
+pub fn parse_options<'a, I>(iter: I, config: &mut Configurable, loc: Location) -> ParseResult<()>
 where
     I: Iterator<Item = &'a str>,
 {