[php] wrap TEnumParameter in `_hx_deref` because it could contain constructors
[php] wrap TEnumParameter in `_hx_deref` because it could contain constructors

pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe