Refactor.

src/packages/array_basic.rs

@@ -42,12 +42,10 @@ fn pad<T: Variant + Clone>(engine: &Engine, args: &mut [&mut Dynamic]) -> FuncRe
     }
 
     if len >= 0 {
-        let item = args[2].downcast_ref::<T>().unwrap().clone();
+        let item = args[2].clone();
         let list = args[0].downcast_mut::<Array>().unwrap();
 
-        while list.len() < len as usize {
-            push(list, item.clone())?;
-        }
+        list.resize(len as usize, item);
     }
     Ok(())
 }