[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.

cranelift/src/utils.rs

@@ -51,7 +51,7 @@ pub fn parse_sets_and_triple(
     parse_options(
         flag_set.iter().map(|x| x.as_str()),
         &mut flag_builder,
-        &Location { line_number: 0 },
+        Location { line_number: 0 },
     ).map_err(|err| err.to_string())?;
 
     let mut words = flag_triple.trim().split_whitespace();
@@ -71,7 +71,7 @@ pub fn parse_sets_and_triple(
             ),
         })?;
         // Apply the ISA-specific settings to `isa_builder`.
-        parse_options(words, &mut isa_builder, &Location { line_number: 0 })
+        parse_options(words, &mut isa_builder, Location { line_number: 0 })
             .map_err(|err| err.to_string())?;
 
         Ok(OwnedFlagsOrIsa::Isa(