virDomainNetDefParseXML: avoid leak upon multiple "filterref"

* src/conf/domain_conf.c (virDomainNetDefParseXML): Don't leak
memory when parsing two or more "filterref" elements.

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 3e45f7959fb7633236c9dbfa894842efb4b6dd01..20c9c51883e877f27b45cdec43c6d3ffec6fd56c 100644 (file)
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1905,6 +1905,7 @@ virDomainNetDefParseXML(virCapsPtr caps,
                 model = virXMLPropString(cur, "type");
             } else if (xmlStrEqual (cur->name, BAD_CAST "filterref")) {
                 filter = virXMLPropString(cur, "filter");
+                VIR_FREE(filterparams);
                 filterparams = virNWFilterParseParamAttributes(cur);
             } else if ((flags & VIR_DOMAIN_XML_INTERNAL_STATUS) &&
                        xmlStrEqual(cur->name, BAD_CAST "state")) {