Win7 OSArchitecture crash workaround

Author: Robert Holt

src/PowerShellEditorServices.Host/EditorServicesHost.cs

@@ -156,6 +156,8 @@ public void StartLogging(string logFilePath, LogLevel logLevel)
 
             string buildTime = BuildInfo.BuildTime?.ToString("s", System.Globalization.CultureInfo.InvariantCulture) ?? "<unspecified>";
 
+            string osArch = GetOSArchitecture();
+
             string logHeader = $@"
 PowerShell Editor Services Host v{fileVersionInfo.FileVersion} starting (PID {Process.GetCurrentProcess().Id}
 
@@ -164,12 +166,12 @@ public void StartLogging(string logFilePath, LogLevel logLevel)
     Name:      {this.hostDetails.Name}
     Version:   {this.hostDetails.Version}
     ProfileId: {this.hostDetails.ProfileId}
-    Arch:      {RuntimeInformation.OSArchitecture}
+    Arch:      {osArch}
 
   Operating system details:
 
     Version: {osVersion}
-    Arch:    {RuntimeInformation.OSArchitecture}
+    Arch:    {osArch}
 
   Build information:
 
@@ -245,7 +247,7 @@ await this.editorSession.PowerShellContext.ImportCommandsModule(
             // gets initialized when that is done earlier than LanguageServer.Initialize
             foreach (string module in this.additionalModules)
             {
-                var command = 
+                var command =
                     new System.Management.Automation.PSCommand()
                         .AddCommand("Microsoft.PowerShell.Core\\Import-Module")
                         .AddParameter("Name", module);
@@ -493,6 +495,16 @@ private IServerListener CreateServiceListener(MessageProtocolType protocol, Edit
             }
         }
 
+        private static string GetOSArchitecture()
+        {
+            if (IntPtr.Size == 8)
+            {
+                return "X64";
+            }
+
+            return "X86";
+        }
+
         #endregion
     }
 }