bhyve: bhyveDomainDefNamespaceFormatXML cleanup

 - Remove ATTRIBUTE_UNUSED for the "buf" argument, it's
   not unused
 - Indent fix
Signed-off-by: NRoman Bogorodskiy <bogorodskiy@gmail.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

src/bhyve/bhyve_domain.c

@@ -232,8 +232,8 @@ bhyveDomainDefNamespaceParse(xmlDocPtr xml ATTRIBUTE_UNUSED,
 }
 
 static int
-bhyveDomainDefNamespaceFormatXML(virBufferPtr buf ATTRIBUTE_UNUSED,
-                                void *nsdata)
+bhyveDomainDefNamespaceFormatXML(virBufferPtr buf,
+                                 void *nsdata)
 {
     bhyveDomainCmdlineDefPtr cmd = nsdata;
     size_t i;