Fix orc reader assert on create data_type in debug (#8706)

The fix from #8174 got reverted in rework of `orc/reader_impl.cu` in #8599 
This PR reinstates the original fix to prevent an assert in debug mode in `gtests/ORC_TEST`

Authors:
  - David Wendt (https://github.com/davidwendt)

Approvers:
  - Karthikeyan (https://github.com/karthikeyann)
  - Conor Hoekstra (https://github.com/codereport)

URL: #8706

cpp/src/io/orc/reader_impl.cu

@@ -840,8 +840,11 @@ std::unique_ptr<column> reader::impl::create_empty_column(const int32_t orc_col_
       break;
 
     case type_id::DECIMAL64:
-      scale = -static_cast<int32_t>(_metadata->get_types()[orc_col_id].scale.value_or(0));
-    default: out_col = make_empty_column(data_type(type, scale));
+      scale   = -static_cast<int32_t>(_metadata->get_types()[orc_col_id].scale.value_or(0));
+      out_col = make_empty_column(data_type(type, scale));
+      break;
+
+    default: out_col = make_empty_column(data_type(type));
   }
 
   return out_col;