fix coverity bugs

apollo-core/src/main/java/com/ctrip/framework/foundation/internals/NetworkInterfaceManager.java

@@ -7,6 +7,7 @@ import java.net.SocketException;
 import java.net.UnknownHostException;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Enumeration;
 import java.util.List;
 import java.util.Objects;
 
@@ -96,7 +97,9 @@ public enum NetworkInterfaceManager {
     }
 
     try {
-      List<NetworkInterface> nis = Collections.list(NetworkInterface.getNetworkInterfaces());
+      Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
+      List<NetworkInterface> nis = interfaces == null ? Collections.<NetworkInterface>emptyList()
+          : Collections.list(NetworkInterface.getNetworkInterfaces());
       List<InetAddress> addresses = new ArrayList<InetAddress>();
       InetAddress local = null;
 

apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/spi/ctrip/WebContextConfiguration.java

@@ -33,7 +33,7 @@ public class WebContextConfiguration {
       @Override
       public void onStartup(ServletContext servletContext) throws ServletException {
         String loggingServerIP = portalConfig.cloggingUrl();
-        String loggingServerPort = portalConfig.cloggingUrl();
+        String loggingServerPort = portalConfig.cloggingPort();
         String credisServiceUrl = portalConfig.credisServiceUrl();
 
         servletContext.setInitParameter("loggingServerIP",