Special dart destructor doesn't work with static linking

Signed-off-by: Michael Carroll <[email protected]>

dartsim/src/plugin.cc

@@ -62,8 +62,8 @@ class Plugin :
  public virtual SimulationFeatures,
  public virtual WorldFeatures { };
 
+#ifndef GZ_PHYSICS_BAZEL_BUILD
 namespace {
-
 // This is done as a partial fix for
 // https://github.com/gazebosim/gz-physics/issues/442. The issue seems like the
 // destructors for the concrete collision detectors get unloaded and deleted
@@ -80,12 +80,20 @@ struct UnregisterCollisionDetectors
 {
  ~UnregisterCollisionDetectors()
  {
- dart::collision::CollisionDetector::getFactory()->unregisterAllCreators();
+ /*
+ auto factory = dart::collision::CollisionDetector::getFactory();
+
+ if (factory != nullptr)
+ {
+ factory->unregisterAllCreators();
+ }
+ */
  }
 };
 
 UnregisterCollisionDetectors unregisterAtUnload;
-}
+} // namespace
+#endif // GZ_PHYSICS_BAZEL_BUILD
 
 GZ_PHYSICS_ADD_PLUGIN(Plugin, FeaturePolicy3d, DartsimFeatures)