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net/pxe: fix error condition

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Test return value of grub_netbuff_reserve(), buf itself cannot be
NULL here.

Found by: Coverity scan.
This commit is contained in:
Andrei Borzenkov 2015-01-30 22:39:11 +03:00
parent 7aaed66455
commit 12abe75aa0
1 changed files with 1 additions and 2 deletions
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3
grub-core/net/drivers/i386/pc/pxe.c
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@ -218,8 +218,7 @@ grub_pxe_recv (struct grub_net_card *dev __attribute__ ((unused)))
return NULL;
/* Reserve 2 bytes so that 2 + 14/18 bytes of ethernet header is divisible
by 4. So that IP header is aligned on 4 bytes. */
grub_netbuff_reserve (buf, 2);
if (!buf)
if (grub_netbuff_reserve (buf, 2))
{
grub_netbuff_free (buf);
return NULL;