buffer_puterror2 - write error string to buffer and flush

       buffer_puterror2 writes the error message corresponding to the error number in errnum to the buffer (e.g.
       "No such file or directory" for ENOENT).

       buffer_puterror2 - write error string to buffer and flush

       0 if everything is fine, -1 on error (setting errno).

buffer_puterror(3), buffer_puts(3), buffer_put(3), buffer_flush(3), buffer(3)

                                                                                             buffer_puterror2(3)

#include<libowfat/buffer.h>

       int buffer_puterror2(buffer* b,int errnum);