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conf: Avoid formatting empty redirfilter element

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If the redirfilter has no usbdev sub-elements, then do not format anything
rather than formatting an empty pair of elements:

    <redirfilter>
    </redirfilter>

Signed-off-by: Luyao Huang <lhuang@redhat.com>
This commit is contained in:
Luyao Huang 2015-05-22 17:26:29 +08:00 committed by John Ferlan
parent 3502f79198
commit 733950c21c
1 changed files with 4 additions and 0 deletions
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4
src/conf/domain_conf.c
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@ -20626,6 +20626,10 @@ virDomainRedirFilterDefFormat(virBufferPtr buf,
{
size_t i;
/* no need format an empty redirfilter */
if (filter->nusbdevs == 0)
return 0;
virBufferAddLit(buf, "<redirfilter>\n");
virBufferAdjustIndent(buf, 2);
for (i = 0; i < filter->nusbdevs; i++) {