New review comment by ericonr on void-packages repository

https://github.com/void-linux/void-packages/pull/29972#discussion_r607088773

Comment:
It's basically adding a layer of indirection to the `vmove` conditional.

```
if [ -z "$CROSS_BUILD" ]; then
build_options_default="gir"
fi

if [ "$build_option_gir" ]; then
vmove ...
fi
```