remove artsculpture and genericbuilding.

deal with buildings having an unknown type.

res/core/common/buildings.xml

@@ -4,9 +4,8 @@
   <building name="illusioncastle" capacity="0" maxcapacity="0" maxsize="0" nobuild="yes"/>
   <building name="xmas_exit" maxsize="10" maxcapacity="2" nobuild="yes" nodestroy="yes" unique="yes"/>
   <building name="caldera" capacity="1" nodestroy="yes" nobuild="yes"/>
-  <building name="genericbuilding" namechange="no" maxsize="1" nobuild="yes"/>
+  <building name="building" namechange="no" maxsize="1" nobuild="yes"/>
   <building name="artacademy" maxsize="100" nobuild="yes" nodestroy="yes" unique="yes"/>
-  <building name="artsculpture" namechange="no" maxsize="100" nobuild="yes" nodestroy="yes" unique="yes"/>
 
   <building name="blessedstonecircle" maxcapacity="3" maxsize="100" nobuild="yes" magic="yes" magres="60" magresbonus="30" auraregen="1.50">
     <construction skill="building" minskill="2" reqsize="100" maxsize="100">

res/core/de/strings.xml

@@ -912,7 +912,7 @@
   <string name="illusioncastle">
     <text locale="de">Traumschlößchen</text>
   </string>
-  <string name="genericbuilding">
+  <string name="building">
     <text locale="de">Struktur</text>
   </string>
   <string name="artacademy">

res/core/en/strings.xml

@@ -310,7 +310,7 @@
   <string name="dam">
     <text locale="en">dam</text>
   </string>
-  <string name="genericbuilding">
+  <string name="building">
     <text locale="en">structure</text>
   </string>
   <string name="harbour">

res/core/fr/strings.xml

@@ -324,7 +324,7 @@
   <string name="dam">
     <text locale="fr">barrage</text>
   </string>
-  <string name="genericbuilding">
+  <string name="building">
     <text locale="fr">bâtiment</text>
   </string>
   <string name="harbour">

src/kernel/building.c

@@ -325,9 +325,14 @@ const building_type *findbuildingtype(const char *name,
             building_type *btype = (building_type *)selist_get(ql, qi);
 
             const char *n = LOC(lang, btype->_name);
+            if (!n) {
+                log_error("building type %s has no translation in %s",
+                          btype->_name, locale_name(lang));
+            } else {
                 type.v = (void *)btype;
                 addtoken((struct tnode **)&bn->names, n, type);
             }
+        }
         bnames = bn;
     }
     if (findtoken(bn->names, name, &type) == E_TOK_NOMATCH)

src/kernel/save.c

@@ -1529,6 +1529,11 @@ struct building *read_building(gamedata *data) {
     READ_INT(store, &b->size);
     READ_STR(store, name, sizeof(name));
     b->type = bt_find(name);
+    if (!b->type) {
+        log_error("building %d has unknown type %s", b->no, name);
+        b->type = bt_find("building");
+        assert(b->type);
+    }
     read_attribs(data, &b->attribs, b);
 
     /* repairs, bug 2221: */