[10404][Patch] Creature::CanAssistTo(), missing check

[Revils]

• * What bug does the patch fix? What features does the patch add?
  add a missing check to prevent mobs with AI to attack players despite some UNIT_FLAGS as answer to a "CallForHelp" from another mob
  * For which repository revision was the patch created?
  10403
  * Is there a thread in the bug report section or at lighthouse? If yes, please add a link to the thread.
  none
  * Who has been writing this patch? Please include either forum user names or email addresses.
  Revils
  

diff --git a/src/game/Creature.cpp b/src/game/Creature.cpp
index ed675c4..c63a58b 100644
--- a/src/game/Creature.cpp
+++ b/src/game/Creature.cpp
@@ -1703,6 +1703,9 @@ bool Creature::CanAssistTo(const Unit* u, const Unit* enemy, bool checkfaction /
    if (isCivilian())
        return false;

+    if (HasFlag(UNIT_FIELD_FLAGS, UNIT_FLAG_NON_ATTACKABLE | UNIT_FLAG_NOT_SELECTABLE | UNIT_FLAG_PASSIVE))
+        return false;
+
    // skip fighting creature
    if (isInCombat())
        return false;

p.s.

I'm not sure if UNIT_STAT_STUNNED should be checked too

[VladimirMangos]

In [10404]. Thank you