minor cleanup

crates/libs/core/src/com_object.rs

@@ -11,7 +11,7 @@ use std::borrow::Borrow;
 ///
 /// This trait is an implementation detail of the Windows crates.
 /// User code should not deal directly with this trait.
-pub unsafe trait ComImpl {
+pub trait ComImpl {
     /// The generated `<foo>_Impl` type (aka the "boxed" type or "outer" type).
     type Outer: IUnknownImpl<Impl = Self>;
 }

crates/libs/core/src/interface.rs

@@ -190,8 +190,7 @@ impl<'a, I: Interface> InterfaceRef<'a, I> {
     /// Calls AddRef on the underlying COM interface and returns an "owned" (counted) reference.
     #[inline(always)]
     pub fn to_owned(self) -> I {
-        let interface: &I = &*self;
-        interface.clone()
+        (*self).clone()
     }
 }
 

crates/libs/implement/src/lib.rs

@@ -149,7 +149,7 @@ pub fn implement(attributes: proc_macro::TokenStream, original_type: proc_macro:
             }
         }
 
-        unsafe impl #generics ::windows_core::imp::ComImpl for #original_ident::#generics where #constraints {
+        impl #generics ::windows_core::imp::ComImpl for #original_ident::#generics where #constraints {
             type Outer = #impl_ident::#generics;
         }