Dont dry out soil if unloaded blocks are nearby

mods/farming/nodes.lua

@@ -113,6 +113,9 @@ minetest.register_abm({
 				minetest.set_node(pos, {name = wet})
 			end
 		else
+			-- only turn back if there are no unloaded blocks (and therefore
+			-- possible water sources) nearby
+			if not minetest.find_node_near(pos, 3, {"ignore"}) then
 				-- turn it back into base if it is already dry
 				if wet_lvl == 0 then
 					-- only turn it back if there is no plant/seed on top of it
@@ -125,6 +128,7 @@ minetest.register_abm({
 					minetest.set_node(pos, {name = dry})
 				end
 			end
+		end
 	end,
 })