Update 2014_03_24_02_world_creature_classlevelstats.sql
DB/Quest; Fix Preying Upon the Weak traps

By untaught, closes #6858
Core/Misc: Fix assertion triggered

Change an assertion added in 6dcd8c8545a65a7bfbd0daaa16f650d8c3a90262 with a NULL check, properly handling the case of a NULL parameter.
Fixes #11771
Revert VS 2013 compile error
Merge branch 'master' of git://github.com/TrinityCore/TrinityCore