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libcody: Avoid double-free

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If the listen call fails then 'goto fail' will jump to that label and
use freeaddrinfo again. Set the pointer to null to prevent that.

libcody/ChangeLog:

	* netserver.cc (ListenInet6): Set pointer to null after
	deallocation.
This commit is contained in:
Jonathan Wakely 2021-10-21 14:17:43 +01:00
parent 1373066a46
commit e6d1003543
1 changed files with 1 additions and 0 deletions
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libcody/netserver.cc
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@ -140,6 +140,7 @@ int ListenInet6 (char const **e, char const *name, int port, unsigned backlog)
listen:;
freeaddrinfo (addrs);
addrs = nullptr;
if (listen (fd, backlog ? backlog : 17) < 0)
{