Fixed a bug with unary minus of compound expressions.
Fixed a bug with unary minus of compound expressions.

drolbr/Overpass-API,drolbr/Overpass-API,drolbr/Overpass-API,mmd-osm/Overpass-API,drolbr/Overpass-API,mmd-osm/Overpass-API,drolbr/Overpass-API,mmd-osm/Overpass-API,mmd-osm/Overpass-API,drolbr/Overpass-API