[bug+fix] Upgrade single tile stops

[gerw]

Stops with only one tile lost their name (waiting goods,...) while upgrading.

Code Select Expand

diff --git simwerkz.cc simwerkz.cc
index 5868ada..0f4af40 100644
--- simwerkz.cc
+++ simwerkz.cc
@@ -2528,23 +2528,27 @@ DBG_MESSAGE("wkz_halt_aux()", "building %s on square %d,%d for waytype %x", besc
                layout &= (besch->get_all_layouts()-1);
        }

-       const bool has_old_halt = bd->is_halt();
+       halthandle_t old_halt = bd->get_halt();
        uint16 old_level = 0;

-       if( has_old_halt ) {
+       halthandle_t halt;
+
+       if( old_halt.is_bound() ) {
                gebaeude_t* gb = bd->find<gebaeude_t>();
                const haus_besch_t *old_besch = gb->get_tile()->get_besch();
                old_level = old_besch->get_level();
                if( old_besch->get_level() >= besch->get_level() ) {
                        return "Upgrade must have\na higher level";
                }
-               else {
-                       hausbauer_t::remove( welt, NULL, gb );
-               }
+               gb->entferne( NULL );
+               delete gb;
+               halt = old_halt;
+       }
+       else {
+               halt = suche_nahe_haltestelle(sp,welt,bd->get_pos());
        }

        // seems everything ok, lets build
-       halthandle_t halt = suche_nahe_haltestelle(sp,welt,bd->get_pos());
        bool neu = !halt.is_bound();

        if(neu) {