add killing of local voxels to domain change

interface/src/Application.cpp

@@ -3525,6 +3525,9 @@ void Application::domainChanged(QString domain) {
     // update the user's last domain in their Profile (which will propagate to data-server)
     _profile.updateDomain(domain);
     
+    // kill the local voxels
+    _voxels.killLocalVoxels();
+    
     // reset the environment so that we don't erroneously end up with multiple
     _environment.resetToDefault();
 }