[PATCH] libcody: Avoid double-free

[Jonathan Wakely via Gcc-patches]

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.
---
 libcody/netserver.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libcody/netserver.cc b/libcody/netserver.cc
index 30202c5106a..0499b5790b4 100644
--- a/libcody/netserver.cc
+++ b/libcody/netserver.cc
@@ -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)
     {
-- 
2.31.1