Defaulting four string values in Primitive.Properties to String.Empty instead of null in the Primitive() constructor

git-svn-id: http://libopenmetaverse.googlecode.com/svn/trunk@2194 52acb1d6-8a22-11de-b505-999d5b087335

OpenMetaverse/Primitives/Primitive.cs

@@ -1070,6 +1070,11 @@ namespace OpenMetaverse
         /// </summary>
         public Primitive()
         {
+            // Default a few null property values to String.Empty
+            Properties.Name = String.Empty;
+            Properties.Description = String.Empty;
+            Properties.TouchName = String.Empty;
+            Properties.SitName = String.Empty;
         }
 
         #endregion Constructors