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Fixed a possible NULL-pointer deref before checking it

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goldsimon 2010-06-12 17:05:54 +00:00
parent f7479781c1
commit 69bd5a29d9
1 changed files with 2 additions and 1 deletions
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3
src/core/dhcp.c
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@ -1206,8 +1206,9 @@ dhcp_release(struct netif *netif)
void void
dhcp_stop(struct netif *netif) dhcp_stop(struct netif *netif)
{ {
struct dhcp *dhcp = netif->dhcp; struct dhcp *dhcp;
LWIP_ERROR("dhcp_stop: netif != NULL", (netif != NULL), return;); LWIP_ERROR("dhcp_stop: netif != NULL", (netif != NULL), return;);
dhcp = netif->dhcp;
/* Remove the flag that says this netif is handled by DHCP. */ /* Remove the flag that says this netif is handled by DHCP. */
netif->flags &= ~NETIF_FLAG_DHCP; netif->flags &= ~NETIF_FLAG_DHCP;