lv_label: dynamically allocate space for dots if necessary. If the required dots storage space is 4 or less bytes, directly stores them in the extended data object

src/lv_core/lv_obj.h

@@ -208,8 +208,7 @@ typedef struct _lv_obj_t
                                  `lv_protect_t`*/
     lv_opa_t opa_scale; /*Scale down the opacity by this factor. Effects all children as well*/
 
-    lv_coord_t
-        ext_size; /*EXTtend the size of the object in every direction. E.g. for shadow drawing*/
+    lv_coord_t ext_size; /*EXTtend the size of the object in every direction. E.g. for shadow drawing*/
 #if LV_OBJ_REALIGN
     lv_reailgn_t realign;
 #endif