added the freeing of pcap_binding

Author: harrydevnull

pcap_binding.cc

@@ -108,6 +108,15 @@ class PcapWorker : public AsyncWorker {
 
         pcap_loop(pcap_handle, num_packets, OnPacketReady, (unsigned char *)pcap_dump_handle);
         pcap_freecode(&fp);
+        /*
+         * Close the savefile opened in pcap_dump_open().
+         */
+        pcap_dump_close(pcap_dump_handle);
+        /*
+         * Close the packet capture device and free the memory used by the
+         * packet capture descriptor.
+         */     
+        pcap_close(pcap_handle);
     }
   }