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udhcp: trivial shrink

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function                                             old     new   delta
dname_dec                                            337     332      -5

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2016-02-26 14:56:18 +01:00
parent 5fa9fefddc
commit 5bec08cebd
1 changed files with 3 additions and 4 deletions
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7
networking/udhcp/domain_codec.c
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@@ -42,7 +42,7 @@ char* FAST_FUNC dname_dec(const uint8_t *cstr, int clen, const char *pre)
*/ */
while (1) { while (1) {
/* note: "return NULL" below are leak-safe since /* note: "return NULL" below are leak-safe since
* dst isn't yet allocated */ * dst isn't allocated yet */
const uint8_t *c; const uint8_t *c;
unsigned crtpos, retpos, depth, len; unsigned crtpos, retpos, depth, len;
@@ -95,9 +95,8 @@ char* FAST_FUNC dname_dec(const uint8_t *cstr, int clen, const char *pre)
if (!dst) { /* first pass? */ if (!dst) { /* first pass? */
/* allocate dst buffer and copy pre */ /* allocate dst buffer and copy pre */
unsigned plen = strlen(pre); unsigned plen = strlen(pre);
ret = dst = xmalloc(plen + len); ret = xmalloc(plen + len);
memcpy(dst, pre, plen); dst = stpcpy(ret, pre);
dst += plen;
} else { } else {
dst[len - 1] = '\0'; dst[len - 1] = '\0';
break; break;