#5140 fix count(null) for php 7.2+
#5140 fix count(null) for php 7.2+

Armstrong1992/SonataAdminBundle,jordisala1991/SonataAdminBundle,sonata-project/SonataAdminBundle,osavchenko/SonataAdminBundle,mweimerskirch/SonataAdminBundle,greg0ire/SonataAdminBundle,greg0ire/SonataAdminBundle,peter-gribanov/SonataAdminBundle,jordisala1991/SonataAdminBundle,mweimerskirch/SonataAdminBundle,osavchenko/SonataAdminBundle,peter-gribanov/SonataAdminBundle,jordisala1991/SonataAdminBundle,mweimerskirch/SonataAdminBundle,OskarStark/SonataAdminBundle,osavchenko/SonataAdminBundle,jordisala1991/SonataAdminBundle,peter-gribanov/SonataAdminBundle,mweimerskirch/SonataAdminBundle,sonata-project/SonataAdminBundle,peter-gribanov/SonataAdminBundle,OskarStark/SonataAdminBundle,ARTACK/SonataAdminBundle,ARTACK/SonataAdminBundle,greg0ire/SonataAdminBundle,osavchenko/SonataAdminBundle,Armstrong1992/SonataAdminBundle,ARTACK/SonataAdminBundle,osavchenko/SonataAdminBundle,greg0ire/SonataAdminBundle,ARTACK/SonataAdminBundle,OskarStark/SonataAdminBundle,OskarStark/SonataAdminBundle