squelch compiler warnings

pandatool/src/vrmlegg/vrmlToEggConverter.cxx

@@ -170,6 +170,9 @@ get_all_defs(SFNodeRef &vrml, VRMLToEggConverter::Nodes &nodes) {
       vrml._p = (*ni).second;
     }
     return;
+
+  default:
+    break;
   }
 
   VrmlNode *node = vrml._p;
@@ -396,8 +399,6 @@ vrml_shape(const VrmlNode *node, EggGroup *group,
 	   const LMatrix4d &net_transform) {
   const VrmlNode *geometry = node->get_value("geometry")._sfnode._p;
 
-  double transparency = 0.0;
-
   if (geometry != NULL) {
     VRMLAppearance appearance(node->get_value("appearance")._sfnode._p);