Druid: Fix crash with Lifebloom blooming when the simulation ends (fixes issue 1962).

git-svn-id: http://simulationcraft.googlecode.com/svn/trunk@18010 3b4652a1-8050-0410-ac47-3d40261b0f8b
Fix compiler warning.

git-svn-id: http://simulationcraft.googlecode.com/svn/trunk@18012 3b4652a1-8050-0410-ac47-3d40261b0f8b