NullPointerException in Mailer.sendMail(Email) when the Mailer(Session) constructor is used

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When calling

    new org.codemonkey.simplejavamail.Mailer(mySession).sendMail(myEmail);

the following exception occurrs:

    Exception in thread "main" java.lang.NullPointerException
        at org.codemonkey.simplejavamail.Mailer.logSession(Mailer.java:260)
        at org.codemonkey.simplejavamail.Mailer.sendMail(Mailer.java:238)
        at MyClientCode

This is because Mailer.logSession(Session, TransportStrategy) tries to access 
members of the TransportStrategy, which was never initialized by the 
Mailer(Session) constructor.

Original issue reported on code.google.com by [email protected] on 19 Sep 2012 at 6:10