[libvirt] [PATCH] Don't copy sexpr node value that is an empty string

[Jim Fehlig]

Eric Blake wrote:
> On 11/18/2011 03:16 PM, Jim Fehlig wrote:
>   
>> Xen4.1 initializes some unspecified sexpr config items to an empty
>> string, unlike previous Xen versions that would leave the item unset.
>> E.g. the kernel item for an HVM guest (non-direct kernel boot):
>>
>> Xen4.0 and earlier
>>   ...
>>   (image
>>     (hvm
>>       (kernel )
>>   ...
>>
>> Xen4.1
>>   ...
>>   (image
>>     (hvm
>>       (kernel '')
>>   ...
>>     
>
> Thanks for the examples; that helps understand the patch.
>
>   
>>  
>> -    if (val) {
>> +    if (val && *val) {
>>          *dst = strdup(val);
>>     
>
> ACK.
>   

Thanks Eric, pushed.

Jim