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slirp: Fix error reported by static code analysis 

Report from smatch:

slirp/tcp_subr.c:127 tcp_respond(17) error:
 we previously assumed 'tp' could be null (see line 124)

Return if 'tp' is NULL.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
This commit is contained in:
Stefan Weil 2012-09-04 23:20:36 +02:00 committed by Jan Kiszka
parent c4d12a743c
commit e56afbc54a
1 changed files with 1 additions and 1 deletions
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2
slirp/tcp_subr.c
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@ -124,7 +124,7 @@ tcp_respond(struct tcpcb *tp, struct tcpiphdr *ti, struct mbuf *m,
if (tp)
win = sbspace(&tp->t_socket->so_rcv);
if (m == NULL) {
if ((m = m_get(tp->t_socket->slirp)) == NULL)
if (!tp || (m = m_get(tp->t_socket->slirp)) == NULL)
return;
tlen = 0;
m->m_data += IF_MAXLINKHDR;