fix issue with terrain intersection curves

public/run_sax.js

@@ -242,6 +242,8 @@ parser.onclosetag = function (node) {
         currentState = State.SEARCH_FOR_SURFACE_OR_GEOMETRY;
       } else if (tagName === "POS") {
         coordinateString += " ";
+      } else if (tagName === "SOLID" || tagName === "MULTISURFACE") {
+        currentState = State.SEARCH_FOR_SURFACE_OR_GEOMETRY;
       }
       break;
     case State.SEARCH_FOR_SURFACE_OR_GEOMETRY: