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hostip: Move allocation to clarify there is no memleak

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By just glancing at the code, it looks like there is a memleak if the
call to Curl_inet_pton() fails. Looking closer, it is clear that the
call to Curl_inet_pton() can not fail, so the code will never leak
memory. However, we can make this obvious by moving the allocation
after the if-statement.

Closes https://github.com/curl/curl/pull/7796
This commit is contained in:
Rikard Falkeborn 2021-09-29 21:15:05 +02:00 • committed by Jay Satiro
parent 0b2260b036
commit 5de119d0b8
1 changed files with 3 additions and 3 deletions
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6
lib/hostip.c
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@ -507,9 +507,6 @@ static struct Curl_addrinfo *get_localhost(int port)
struct sockaddr_in sa;
unsigned int ipv4;
unsigned short port16 = (unsigned short)(port & 0xffff);
ca = calloc(sizeof(struct Curl_addrinfo) + ss_size + hostlen + 1, 1);
if(!ca)
return NULL;
/* memset to clear the sa.sin_zero field */
memset(&sa, 0, sizeof(sa));
@ -519,6 +516,9 @@ static struct Curl_addrinfo *get_localhost(int port)
return NULL;
memcpy(&sa.sin_addr, &ipv4, sizeof(ipv4));
ca = calloc(sizeof(struct Curl_addrinfo) + ss_size + hostlen + 1, 1);
if(!ca)
return NULL;
ca->ai_flags = 0;
ca->ai_family = AF_INET;
ca->ai_socktype = SOCK_STREAM;