[vnet] fix patch

vnet-yarp/distinfo

@@ -2,4 +2,4 @@ SHA1 (vnet-yarp-0.2.tar.gz) = 0ade67a18b108916c95dadfaa7355a97f72faefd
 RMD160 (vnet-yarp-0.2.tar.gz) = 34e797c806afc5b27aeeb270fe2f2dc4e497bd95
 Size (vnet-yarp-0.2.tar.gz) = 10139 bytes
 SHA1 (patch-aa) = 07ecf0f7bc4644da46e9cf5543c8505dc8ed9f53
-SHA1 (patch-ba) = 916b1476e47517769c59045680b5d047413b5028
+SHA1 (patch-ba) = 15422cf266df548e33c73a591a5dc045059a304b

vnet-yarp/patches/patch-ba

@@ -6,7 +6,7 @@
  					if (current_dst != dst) {
 -						port.close();
 -						port.open(local_uri.c_str());
-+						::yarp::os::Network::disconnect(local_uri.c_str(), dst.c_str());
++						::yarp::os::Network::disconnect(local_uri.c_str(), current_dst.c_str());
  						port.addOutput(dst.c_str());
  						current_dst = dst;
  					}