Still mantis #7929: apply next owner mask to the new owner, the group.

OpenSim/Region/Framework/Scenes/Scene.Inventory.cs

@@ -2743,6 +2743,7 @@ namespace OpenSim.Region.Framework.Scenes
                     sog.SetOwnerId(groupID);
                     // Make the group mask be the previous owner mask
                     sog.RootPart.GroupMask = sog.RootPart.OwnerMask;
+                    sog.ApplyNextOwnerPermissions();
 
                     sog.ScheduleGroupForFullUpdate();