Fix bug where objects couldn't be set back to the "none" group.

This is handled by treating UUID.Zero as a special case.
Currently, asking for the "none" group returns nothing because XMLRPC groups, at least, is not properly handling this case.
It may be better in the future to have GroupsModule return an appropriate GroupsData structure instead or require the underlying services to behave appropriately.
This is a further component of http://opensimulator.org/mantis/view.php?id=5588

1 files changed, 13 insertions, 8 deletions

diff --git a/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/GroupsModule.cs b/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/GroupsModule.cs
index 9969a15..e959821 100644
--- a/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/GroupsModule.cs
+++ b/OpenSim/Region/OptionalModules/Avatar/XmlRpcGroups/GroupsModule.cs
@@ -332,15 +332,20 @@ namespace OpenSim.Region.OptionalModules.Avatar.XmlRpcGroups
         private void HandleObjectGroupUpdate(
             IClientAPI remoteClient, UUID GroupID, uint objectLocalID, UUID Garbage)
         {
-            GroupMembershipData gmd = GetMembershipData(GroupID, remoteClient.AgentId);
-
-            if (gmd == null)
+            // XXX: Might be better to get rid of this special casing and have GetMembershipData return something
+            // reasonable for a UUID.Zero group.
+            if (GroupID != UUID.Zero)
             {
-//                m_log.WarnFormat(
-//                    "[GROUPS]: User {0} is not a member of group {1} so they can't update {2} to this group",
-//                    remoteClient.Name, GroupID, objectLocalID);
-
-                return;
+                GroupMembershipData gmd = GetMembershipData(GroupID, remoteClient.AgentId);
+    
+                if (gmd == null)
+                {
+//                    m_log.WarnFormat(
+//                        "[GROUPS]: User {0} is not a member of group {1} so they can't update {2} to this group",
+//                        remoteClient.Name, GroupID, objectLocalID);
+    
+                    return;
+                }
             }
 
             SceneObjectGroup so = ((Scene)remoteClient.Scene).GetGroupByPrim(objectLocalID);