Construct pointer to cache type for non-pointers only.

When the list type is already a pointer this code results in a cache type of **Type which can't be cast to runtime.Object.
This adds a check to the function to only grab a pointer to a type if it is not already a ptr type.

Author: DewaldV

pkg/cache/informer_cache.go

@@ -93,7 +93,11 @@ func (ip *informerCache) List(ctx context.Context, out runtime.Object, opts ...c
 		}
 		// http://knowyourmeme.com/memes/this-is-fine
 		elemType := reflect.Indirect(reflect.ValueOf(itemsPtr)).Type().Elem()
-		cacheTypeValue := reflect.Zero(reflect.PtrTo(elemType))
+		if elemType.Kind() != reflect.Ptr {
+			elemType = reflect.PtrTo(elemType)
+		}
+
+		cacheTypeValue := reflect.Zero(elemType)
 		var ok bool
 		cacheTypeObj, ok = cacheTypeValue.Interface().(runtime.Object)
 		if !ok {