Update compiler/rustc_codegen_llvm/src/builder/autodiff.rs

Co-authored-by: Oli Scherer <[email protected]>

Author: ZuseZ4

compiler/rustc_codegen_llvm/src/builder/autodiff.rs

@@ -63,7 +63,7 @@ fn generate_enzyme_call<'ll>(
     // functions. Unwrap will only panic, if LLVM gave us an invalid string.
     let name = llvm::get_value_name(outer_fn);
     let outer_fn_name = std::str::from_utf8(name).unwrap();
-    ad_name.push_str(outer_fn_name.to_string().as_str());
+    ad_name.push_str(outer_fn_name);
 
     // Let us assume the user wrote the following function square:
     //