Clipboard: add null checks for Text and Html.
Clipboard: add null checks for Text and Html.

PowerOfCode/Eto,bbqchickenrobot/Eto-1,l8s/Eto,l8s/Eto,PowerOfCode/Eto,bbqchickenrobot/Eto-1,l8s/Eto,PowerOfCode/Eto,bbqchickenrobot/Eto-1