v.distance: use default db connection of current mapset for new vector db connection

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@72984 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.distance/main.c

@@ -1748,7 +1748,6 @@ int main(int argc, char *argv[])
 	if (create_table) {
 	    dbConnection connection;
 
-	    db_set_default_connection();
 	    db_get_connection(&connection);
 	    Vect_map_add_dblink(Outp, 1, NULL, opt.table->answer, "cat",
 				connection.databaseName,