void unnotice_labyrinth_portal();

}
void unnotice_labyrinth_portal()
{
    level_pos curpos(level_id::get_current_level_id());
    // XXX Is there really no better way to do this?
    curpos.pos.x = you.x_pos;
    curpos.pos.y = you.y_pos;
    if ( portals_present.find(curpos) != portals_present.end() )
        portals_present.erase(curpos);
    else
        mprf(MSGCH_DIAGNOSTICS, "Oops - tried to unnotice bad portal.");

#include "overmap.h"

        // no longer a feature
        unnotice_labyrinth_portal();