[10981] fixed SpellAuraHolder::HandleSpellSpecificBoost() for 50385

[Auntie Mangos]

* What bug does the patch fix? What features does the patch add?

This removes the 600 percent threat mod for some spells in DK's talent "Improved Frost Presence". If a character had skilled this talent, threat mod was also applied in Blood and Unholy Presence.

Improved Frost Presence

* For which repository revision was the patch created?

10951

* Is there a thread in the bug report section or at lighthouse? If yes, please add a link to the thread.

We talked about that in my threat multiplier topic. Read from here:

http://getmangos.eu/community/post/130260/#p130260

* Who has been writing this patch? Please include either forum user names or email addresses.

Me. Thanks to Lynx3d and Vladimir for hints and explainations.

Commit: https://github.com/x3n/mangos/commit/27a57f9840973e65d71fe15aa6d6104dfde4dbac

[VladimirMangos]

nice, i only will add comment for 0 value use in code.

With this change in [10981]. Thank you