close cursor before database and driver

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@48553 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.db.select/main.c

@@ -279,6 +279,7 @@ int main(int argc, char **argv)
 	G_fatal_error(_("Unable to open database <%s> by driver <%s>"),
 		      Fi->database, Fi->driver);
 
+    db_close_cursor(&cursor);
     db_close_database_shutdown_driver(driver);
     Vect_close(&Map);