[PATCH 2 of 3] chg: add util function abortmsge to print error with errno

[Jun Wu]

On 04/05/2016 05:00 PM, Yuya Nishihara wrote:
> Hmm, vprintabortmsg(int eno, const char *fmt, va_list ap) ?

I think it works. Never wrote a function with "va_list" parameters so
subconsciously forgot it is doable.