Merge pull request #560 from asomers/dead_code-14-march-2023

Fix some dead_code warnings with the latest compiler

Author: asomers

mockall/tests/automock_impl_trait_with_associated_types_for.rs

@@ -4,7 +4,7 @@
 
 use mockall::*;
 
-struct Foo {}
+pub struct Foo {}
 #[automock]
 impl Iterator for Foo {
     type Item = u32;

mockall/tests/automock_unsafe_trait.rs

@@ -9,7 +9,7 @@ pub unsafe trait Foo {
     fn foo(&self) -> i32;
 }
 
-struct Baz{}
+pub struct Baz{}
 
 #[automock]
 unsafe impl Foo for Baz {