Follow up r15569 fixed console error

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@15570 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/itemdb.c

@@ -616,12 +616,10 @@ static bool itemdb_read_itemtrade(char* str[], int columns, int current)
 	flag = atoi(str[1]);
 	gmlv = atoi(str[2]);
 
-	if( flag < 0 || flag > 256 )
-	{//Check range
+	if( flag < 0 || flag > 511 ) {//Check range
 		ShowWarning("itemdb_read_itemtrade: Invalid trading mask %d for item id %d.\n", flag, nameid);
 		return false;
 	}
-
 	if( gmlv < 1 )
 	{
 		ShowWarning("itemdb_read_itemtrade: Invalid override GM level %d for item id %d.\n", gmlv, nameid);