[BusyBox] __attribute__ ((format (printf, 1, 2)));

[Vladimir N. Oleynik]

I think, require restore 
__attribute__ ((format (printf, 1, 2))) for error_msg()
and  
__attribute__ ((noreturn, format (printf, 1, 2))) for error_msg_and_die() .

Only perror_msg(_and_die) can usage without this attributes.
For error_msg is nonsense.
I remember, how in the previous version we have allowed a pair of mistakes
because of it.


--w
vodz