Dynaheir dream script fixes

Dynaheir’s dream script can crash the game if Dynaheir is dead when
resting.  http://forums.gibberlings3.net/index.php?showtopic=26372

Moving “!StateCheck(Myself,CD_STATE_NOTVALID)” triggers to beginning of
trigger sequence stops the crashing.

Thanks to Jastey for pointing out the issue and solution.
http://forum.baldursgate.com/discussion/comment/497983/#Comment_497983