[9456] Fixed spell proc code for mixed proc event cases.

[newsbot]

<pre>m src/game/SpellMgr.cpp
m src/game/Unit.cpp
m src/shared/revision_nr.h

[9456] Fixed spell proc code for mixed proc event cases.

* Allow spells with multiple procEx flags to trigger also with 0 dmg, if current
procExtra is no normal hit (e.g. block and normal hit as flags -> all dmg blocked).

* Also allow proc at hit as result partly block. This fix case from unknown author
prepered by KAPATEJIb.

Signed-off-by: VladimirMangos <vladimir@getmangos.com></pre>



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