* Apply http://opensimulator.org/mantis/view.php?id=3418

* Prevents occasional wind module related exceptions on region server shutdown
* Thanks Intimidated!

CONTRIBUTORS.txt

@@ -60,6 +60,7 @@ Patches
 * Grumly57
 * Fly-Man
 * Flyte Xevious
+* Intimidated
 * jhurliman
 * jimbo2120 (IBM)
 * John R Sohn (XenReborn)

OpenSim/Region/CoreModules/World/Wind/Plugins/SimpleRandomWind.cs

@@ -81,6 +81,9 @@ namespace OpenSim.Region.CoreModules.World.Wind.Plugins
         }
 
         public void WindUpdate(uint frame)
+        {
+            //Make sure our object is valid (we haven't been disposed of yet)
+            if (m_windSpeeds != null)
             {
                 for (int y = 0; y < 16; y++)
                 {
@@ -93,6 +96,7 @@ namespace OpenSim.Region.CoreModules.World.Wind.Plugins
                     }
                 }
             }            
+        }
 
         public Vector3 WindSpeed(float fX, float fY, float fZ)
         {