Fixed crash in credits

src/engine/surface_load.c

@@ -762,6 +762,8 @@ void load_object_surfaces(s16** data, s16* vertexData) {
  * Transform an object's vertices, reload them, and render the object.
  */
 void load_object_collision_model(void) {
+    if (gCurrentObject->collisionData == NULL) { return; }
+
     UNUSED s32 unused;
     s16 vertexData[600];