Don't emit error on ECONNRESET - just close

Fix #670

lib/net.js

@@ -635,7 +635,11 @@ Socket.prototype._onReadable = function() {
                                pool.length - pool.used);
     DTRACE_NET_SOCKET_READ(this, bytesRead);
   } catch (e) {
+    if (e.code == 'ECONNRESET') {
+      self.destroy();
+    } else {
       self.destroy(e);
+    }
     return;
   }