Fixed NullPointerException when the timer was already gone.

git-svn-id: http://red5.googlecode.com/svn/java/server/trunk@4629 1b6495e4-3631-0410-8e05-8f51eee8b9cc
Changing version back to 1.0.2

git-svn-id: http://red5.googlecode.com/svn/java/server/trunk@4630 1b6495e4-3631-0410-8e05-8f51eee8b9cc
Merge branch 'bbb-red5' into red5-r4630