[libvirt] [PATCH] nwfilter_ebiptables_driver.c: avoid NULL dereference

[Jim Meyering]

Eric Blake wrote:
> On 03/29/2010 10:37 AM, Jim Meyering wrote:
>> Another one caught by clang:
>>
>> Note the first test to see if "inst" may be NULL.
>> Then, in the following loop, "inst" is unconditionally
>> dereferenced via "inst[i]".  There are other unprotected
>> used of "inst[i]" below, too.
>>
>> Rather than trying to protect all uses, one by one, I chose
>> to return "success" when given an empty list of rules.
>
> ACK that your patch is the minimal fix to avoid a segfault, but we
> should probably get Stefan's input on whether returning success on an
> empty input is the best course of behavior.

Ok.  I've Cc'd him.