fix missing text (#237)

Author: stephenegriffin

MAPIInspector/Source/Parsers/BaseStructure.cs

@@ -52,7 +52,11 @@ public static TreeNode AddBlock(Block block, bool debug)
         private static TreeNode AddBlock(Block block, int blockRootOffset, bool debug)
         {
             // Clean up embedded null characters in the block text for display purposes
-            var text = block.Text.Replace("\0", "\\0");
+            var text = block.Text?.Replace("\0", "\\0");
+            if (text == null)
+            {
+                text = $"Exception: Missing Text property for {block.GetType()}";
+            }
             const int maxNodeLength = 100;
             // Truncate the text if it exceeds 100 characters for display purposes
             if (text.Length > maxNodeLength)

MAPIInspector/Source/Parsers/MSOXCDATA/2.11 Property Values/PtypServerIdStruct.cs

@@ -52,6 +52,7 @@ protected override void Parse()
 
         protected override void ParseBlocks()
         {
+            Text = "PtypServerId";
             AddChildBlockT(Ours, "Ours");
             AddLabeledChild(FolderID, "FolderID");
             AddLabeledChild(MessageID, "MessageID");