Should check price before adding units

It would be nice if wc_uom_render_output() checked if price is non empty (it can be empty)

So
// Check if variable OR UOM text exists.
if ( $woo_uom_output ) :

would become
// Check if variable OR UOM text exists.
if ( $price && $woo_uom_output ) :

This would prevent outputting just the units of measure when there is no price.

Thanks