moved workaround in code

moved to only trigger if blueprint contains displays with sprites, fixes "attempt to index local" crash as well

changelog.txt

@@ -1,4 +1,9 @@
 ---------------------------------------------------------------------------------------------------
+Version: 1.1.4
+Date: 2021-09-07
+  Bugfixes:
+    - fixed crash and unwanted behaviour introduced with last release
+---------------------------------------------------------------------------------------------------
 Version: 1.1.3
 Date: 2021-09-06
   Bugfixes:

control.lua

@@ -553,16 +553,17 @@ script.on_event(defines.events.on_player_setup_blueprint, function (event)
 	if player and player.blueprint_to_setup and player.blueprint_to_setup.valid_for_read then blueprint = player.blueprint_to_setup
 	elseif player and player.cursor_stack.valid_for_read and player.cursor_stack.name == "blueprint" then blueprint = player.cursor_stack end
 	
-	-- Workaround for blueprint update bug
-	if blueprint.get_blueprint_entity_count() == 0 then
-		player.print({"display-plates.blueprint-wont-have-icons"})
-		return
-    end
-	
 	if blueprint then
 		for index,entity in pairs(event.mapping.get()) do
 			local stype,sname = get_render_sprite_info(entity)
 			if stype and sname then
+
+				-- Workaround for blueprint update bug
+				if blueprint.get_blueprint_entity_count() == 0 then
+					player.print({"display-plates.blueprint-wont-have-icons"})
+					return
+				end
+
 				blueprint.set_blueprint_entity_tag(index, "display-plate-sprite-type", stype)
 				blueprint.set_blueprint_entity_tag(index, "display-plate-sprite-name", sname)
 				blueprint.set_blueprint_entity_tag(index, "display-plate-sprite-map-marker", get_has_map_marker(entity))

info.json

@@ -1,6 +1,6 @@
 {
 	"name": "IndustrialDisplayPlates",
-	"version": "1.1.3",
+	"version": "1.1.4",
 	"title": "Industrial Display Plates",
 	"author": "Wyrrrd",
 	"homepage": "https://github.com/Wyrrrd/IndustrialDisplayPlates",