9.0.5: HW protected functions can't be called from OnClick script handlers

[Meorawr]

As of 9.0.5.37503 it seems that OnClick handlers on buttons aren't considered viable sources of hardware inputs. This breaks things like addons creating buttons to call functions like ReloadUI or SendWho.

The following snippet works fine on 9.0.2.37474 but not on 9.0.5.37503:

B1 = B1 or CreateFrame("Button", nil, UIParent, "UIPanelButtonTemplate");
B1:SetSize(200, 22);
B1:SetPoint("CENTER");
B1:SetText("Click for things");
B1:SetScript("OnClick", function()
      C_FriendList.SetWhoToUi(true);
      C_FriendList.SendWho((UnitName("player")));
end);

If you change the "OnClick" handler to "OnMouseDown", "OnMouseUp", "OnKeyDown", etc. it works fine on 9.0.5.

[Meorawr]

Fixed in 9.0.5.37623.