From f7e92d4e0788667d9e94ec2b6409a744b4f75d84 Mon Sep 17 00:00:00 2001
From: Stephan Hadinger <stephan.hadinger@gmail.com>
Date: Sun, 9 May 2021 19:38:27 +0200
Subject: [PATCH] LVGL Fix warning when sending NULL instead of an instance

---
 lib/libesp32_lvgl/LVGL/library.json | 3 ---
 tasmota/xdrv_52_2_berry_native.ino  | 7 ++++++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/lib/libesp32_lvgl/LVGL/library.json b/lib/libesp32_lvgl/LVGL/library.json
index f0ec9b28d..9012204f0 100644
--- a/lib/libesp32_lvgl/LVGL/library.json
+++ b/lib/libesp32_lvgl/LVGL/library.json
@@ -7,9 +7,6 @@
 		"type": "git",
 		"url": "https://github.com/lvgl/lvgl.git"
 	},
-	"build": {
-		"includeDir": "."
-	},
 	"license": "MIT",
 	"homepage": "https://lvgl.io",
 	"frameworks": "*",
diff --git a/tasmota/xdrv_52_2_berry_native.ino b/tasmota/xdrv_52_2_berry_native.ino
index 065ac0546..5f9eccd72 100644
--- a/tasmota/xdrv_52_2_berry_native.ino
+++ b/tasmota/xdrv_52_2_berry_native.ino
@@ -310,7 +310,12 @@ int32_t be_convert_single_elt(bvm *vm, int32_t idx, const char * arg_type = null
 
   // check if simple type was a match
   if (provided_type) {
-    if ((arg_type_len != 1) || ((arg_type[0] != provided_type) && arg_type[0] != '.') ) {
+    bool type_ok = false;
+    type_ok = (arg_type[0] == '.');                           // any type is accepted
+    type_ok = type_ok || (arg_type[0] == provided_type);      // or type is a match
+    type_ok = type_ok || (ret == 0 && arg_type_len != 1);    // or NULL is accepted for an instance
+    
+    if (!type_ok) {
       berry_log_P("Unexpected argument type '%c', expected '%s'", provided_type, arg_type);
     }
     return ret;