question about change in inet_ntoa.c


I was looking at the differences between some old FreeBSD code
and the one of 7.0-RC1 and was wondering about a change
in inet_ntoa.c

/***** 7.0-RC1 **************/

sprintf(buf, "%d.%d.%d.%d",
ucp[0] & 0xff,
ucp[1] & 0xff,
ucp[2] & 0xff,
ucp[3] & 0xff);


/****** 4.11-RELEASE ***********/


static const char fmt[] = "%u.%u.%u%u";
if ((size_t)snprintf(dst, size, fmt, src[0], src[1], src[2], src[3])
>= size) {
....
....

Was there a specific purpose of changing the more easy and simple way
of %u instead of the combination of %d and and-ing with 0xff ??
It essentially gives the same result but increases overhead (i think) in the more
recent version.


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