Return for both players and mobjs if they've got an empty table, instead of just mobjs

src/lua_script.c

@@ -715,11 +715,15 @@ static void ArchiveExtVars(void *pointer, const char *ptype)
 	for (i = 0; lua_next(gL, -2); i++)
 		lua_pop(gL, 1);
 
-	if (i == 0 && !fastcmp(ptype,"player")) // skip anything that has an empty table and isn't a player.
+	// skip anything that has an empty table and isn't a player.
+	if (i == 0)
 	{
+		if (fastcmp(ptype,"player")) // always include players even if they have no extra variables
+			WRITEUINT16(save_p, 0);
 		lua_pop(gL, 1);
 		return;
 	}
+
 	if (fastcmp(ptype,"mobj")) // mobjs must write their mobjnum as a header
 		WRITEUINT32(save_p, ((mobj_t *)pointer)->mobjnum);
 	WRITEUINT16(save_p, i);