Update sfinv support to match stable version

sfinv.lua

@@ -22,7 +22,7 @@ if minetest.get_modpath("sfinv") then
 				local event = minetest.explode_textlist_event(fields.awards)
 				if event.type == "CHG" then
 					context.awards_idx = event.index
-					sfinv.set(player, context)
+					sfinv.set_player_inventory_formspec(player, context)
 				end
 			end
 		end