Added check for user movement specification before discarding an incoming

AgentUpdate packet. This fixes the problem with vehicles not moving forward
after the first up-arrow.
Code to fix a potential exception when using different IClientAPIs.

1 files changed, 2 insertions, 1 deletions

diff --git a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
index 32282af..f5c0b05 100644
--- a/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
+++ b/OpenSim/Region/ClientStack/Linden/UDP/LLUDPServer.cs
@@ -1316,9 +1316,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
 
                 AgentUpdatePacket agentUpdate = (AgentUpdatePacket)packet;
 
+                LLClientView llClient = client as LLClientView;
                 if (agentUpdate.AgentData.SessionID != client.SessionId 
                     || agentUpdate.AgentData.AgentID != client.AgentId
-                    || !((LLClientView)client).CheckAgentUpdateSignificance(agentUpdate.AgentData))
+                    || !(llClient == null || llClient.CheckAgentUpdateSignificance(agentUpdate.AgentData)) )
                 {
                     PacketPool.Instance.ReturnPacket(packet);
                     return;