Group creation again (follow-up to 132538d). Groups now only disband if all members reject the invitation (as opposed to if any member rejects the invitation).

src/server/game/Entities/Player/Player.cpp

@@ -2696,7 +2696,6 @@ bool Player::IsInSameRaidWith(Player const* p) const
 }
 
 ///- If the player is invited, remove him. If the group if then only 1 person, disband the group.
-/// @todo Shouldn't we also check if there is no other invitees before disbanding the group?
 void Player::UninviteFromGroup()
 {
     Group* group = GetGroupInvite();
@@ -2705,13 +2704,14 @@ void Player::UninviteFromGroup()
 
     group->RemoveInvite(this);
 
-    if (group->GetMembersCount() <= 1)                       // group has just 1 member => disband
+    if (group->IsCreated())
     {
-        if (group->IsCreated())
-        {
+        if (group->GetMembersCount() <= 1) // group has just 1 member => disband
             group->Disband(true);
-        }
-        else
+    }
+    else
+    {
+        if (group->GetInviteeCount() <= 1)
         {
             group->RemoveAllInvites();
             delete group;

src/server/game/Groups/Group.h

@@ -259,6 +259,7 @@ class TC_GAME_API Group
         GroupReference* GetFirstMember() { return m_memberMgr.getFirst(); }
         GroupReference const* GetFirstMember() const { return m_memberMgr.getFirst(); }
         uint32 GetMembersCount() const { return m_memberSlots.size(); }
+        uint32 GetInviteeCount() const { return m_invitees.size(); }
         GroupType GetGroupType() const { return m_groupType; }
 
         uint8 GetMemberGroup(ObjectGuid guid) const;