rem: dprintf(" %-32s\t\t%s\n", cmd->name, cmd->description);
add: dprintf(" %-32s\t\t%s\n", cmd->name, cmd->description ? cmd->description : "");
context: cmd_help(int argc, char **argv){	struct debugger_command *cmd;	dprintf("debugger commands:\n");	cmd = commands;	while (cmd != NULL) {		dprintf(" %-32s\t\t%s\n", cmd->name, cmd->description);		cmd = cmd->next;	}	return 0;}