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check argument of AddDropMulticastMembership()

This commit is contained in:
Thomas Bernard 2012-05-08 23:11:48 +02:00
parent 29fa82bae4
commit 4510da6065
1 changed files with 3 additions and 1 deletions
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4
minissdpd/openssdpsocket.c
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@ -1,4 +1,4 @@
/* $Id: openssdpsocket.c,v 1.10 2012/04/09 21:50:18 nanard Exp $ */
/* $Id: openssdpsocket.c,v 1.11 2012/05/02 23:09:45 nanard Exp $ */
/* MiniUPnP project
* http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
* (c) 2006-2012 Thomas Bernard
@ -82,6 +82,8 @@ AddDropMulticastMembership(int s, const char * ifaddr, int ipv6, int drop)
unsigned int ifindex;
#endif
if(s <= 0)
return -1; /* nothing to do */
#ifdef ENABLE_IPV6
if(ipv6)
{