-Fix incomplete battle_check_target prior to 17000. (thus allowing flag fail to continue wich incorrect)
--Concerned skill are : RK_PHANTOMTHRUST, WL_WHITEIMPRISON, SEVERE_RAINSTORM, NETHERWORLD, FIRE_MANTLE


git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@17146 54d463be-8e91-2dee-dedb-b68131a5f0ec