smaller leakage (xml property, no wormhole)

src/common/kernel/xmlreader.c

@@ -185,6 +185,7 @@ xml_readconstruction(xmlXPathContextPtr xpath, xmlNodePtr * nodeTab, int nodeNr,
       if (property!=NULL) {
         pf_generic foo = get_function((const char*)property);
         a_add(&con->attribs, make_skillmod(NOSKILL, SMF_PRODUCTION, (skillmod_fun)foo, 1.0, 0));
+        xmlFree(property);
       }
 
     }

src/common/modules/wormhole.c

@@ -172,6 +172,8 @@ create_wormholes(void)
     r=r->next;
   }
 
+  if (count<2) return;
+
   match = (region**)malloc(sizeof(region*) * count);
   rptr = rlist;
   while (i!=count) {