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java.lang.NullPointerException: 	at com.atlassian.jira.plugins.mail.webwork.AddSmtpMailServer$1.compare(AddSmtpMailServer.java:46)	at com.atlassian.jira.plugins.mail.webwork.AddSmtpMailServer$1.compare(AddSmtpMailServer.java:42)	at java.util.TreeMap.put(TreeMap.java:530)	at java.util.TreeSet.add(TreeSet.java:238)	at java.util.AbstractCollection.addAll(AbstractCollection.java:305)	at java.util.TreeSet.addAll(TreeSet.java:295)	at com.atlassian.jira.plugins.mail.webwork.AddSmtpMailServer.doDefault(AddSmtpMailServer.java:52)