Remove trainer npcflags for player that can not train from npc. by NoFantasy

--HG--
branch : trunk

src/game/Object.cpp

@@ -527,8 +527,17 @@ void Object::_BuildValuesUpdate(uint8 updatetype, ByteBuffer * data, UpdateMask
                     // remove custom flag before sending
                     uint32 appendValue = m_uint32Values[ index ] & ~(UNIT_NPC_FLAG_GUARD + UNIT_NPC_FLAG_OUTDOORPVP);
 
-                    if (GetTypeId() == TYPEID_UNIT && !target->canSeeSpellClickOn((Creature*)this))
-                        appendValue &= ~UNIT_NPC_FLAG_SPELLCLICK;
+                    if (GetTypeId() == TYPEID_UNIT)
+                    {
+                        if (!target->canSeeSpellClickOn((Creature*)this))
+                            appendValue &= ~UNIT_NPC_FLAG_SPELLCLICK;
+
+                        if (appendValue & UNIT_NPC_FLAG_TRAINER)
+                        {
+                            if (!((Creature*)this)->isCanTrainingOf(target, false))
+                                appendValue &= ~(UNIT_NPC_FLAG_TRAINER | UNIT_NPC_FLAG_TRAINER_CLASS | UNIT_NPC_FLAG_TRAINER_PROFESSION);
+                        }
+                    }
 
                     *data << uint32(appendValue);
                 }