Fix 2 possible NullPointer occurences

marco

2015-10-17 1aec17636d8c548257cb307f8cc1e41354e00421

 src/main/java/com/gitblit/manager/GitblitManager.java

@@ -649,8 +649,8 @@
    */

   @Override
   public UserModel authenticate(String username, char[] password) {
      return authenticationManager.authenticate(username, password);
   public UserModel authenticate(String username, char[] password, String remoteIP) {
      return authenticationManager.authenticate(username, password, remoteIP);
   }

   @Override