conf: virnwfilterbindingdef: include virxml.h

The ParseNode function takes arguments with types
from libxml.

Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

src/conf/virnwfilterbindingdef.h

@@ -25,6 +25,7 @@
 #include "virmacaddr.h"
 #include "virhash.h"
 #include "virbuffer.h"
+#include "virxml.h"
 
 typedef struct _virNWFilterBindingDef virNWFilterBindingDef;
 typedef virNWFilterBindingDef *virNWFilterBindingDefPtr;