@@ -18,10 +18,14 @@
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
 
 #include <assert.h>
 
 #include <netinet/in.h>
 #include <arpa/inet.h>
@@ -237,11 +241,13 @@
 			    entryWithResourceRecord: resourceRecord
 					     handle: handle]];
 		}
 	} @finally {
 		[self freeMemory: answer];
+#ifdef HAVE_RES_NDESTROY
 		res_ndestroy(&resState);
+#endif
 	}
 
 	[pool release];
 }