Rollup merge of #131375 - klensy:clone_on_ref_ptr, r=cjgillot

compiler: apply clippy::clone_on_ref_ptr for CI

Apply lint https://rust-lang.github.io/rust-clippy/master/index.html#/clone_on_ref_ptr for compiler, also see https://github.com/rust-lang/rust/pull/131225#discussion_r1790109443.

Some Arc's can be misplaced with Lrc's, sorry.

https://rust-lang.zulipchat.com/#narrow/channel/131828-t-compiler/topic/enable.20more.20clippy.20lints.20for.20compiler.20.28and.5Cor.20std.29

compiler/rustc_codegen_llvm/src/back/lto.rs

@@ -570,7 +570,7 @@ fn thin_lto(
 
             info!(" - {}: re-compiled", module_name);
             opt_jobs.push(LtoModuleCodegen::Thin(ThinModule {
-                shared: shared.clone(),
+                shared: Arc::clone(&shared),
                 idx: module_index,
             }));
         }