Fix bug in HandsOff config

Author: gleocadie

tracer/src/Datadog.Trace/LibDatadog/HandsOffConfiguration/ConfiguratorHelper.cs

@@ -35,6 +35,7 @@ internal static ConfigurationResult GetConfiguration(string? handsOffLocalConfig
         var configHandle = IntPtr.Zero;
         Error? resultError = null;
         LibraryConfigs? libraryConfigs = null;
+        LibraryConfigResult configurationResult = default;
         try
         {
             languageCs = new CharSlice(TracerConstants.Language);
@@ -55,7 +56,7 @@ internal static ConfigurationResult GetConfiguration(string? handsOffLocalConfig
                 NativeInterop.LibraryConfig.ConfiguratorWithFleetPath(configHandle, fleetPath.Value);
             }
 
-            var configurationResult = NativeInterop.LibraryConfig.ConfiguratorGet(configHandle);
+            configurationResult = NativeInterop.LibraryConfig.ConfiguratorGet(configHandle);
             var result = configurationResult.Result;
 
             if (configurationResult.Tag == ResultTag.Err)
@@ -108,7 +109,7 @@ internal static ConfigurationResult GetConfiguration(string? handsOffLocalConfig
 
             if (libraryConfigs.HasValue)
             {
-                NativeInterop.LibraryConfig.LibraryConfigDrop(libraryConfigs.Value);
+                NativeInterop.LibraryConfig.LibraryConfigDrop(configurationResult);
             }
 
             if (configHandle != IntPtr.Zero)

tracer/src/Datadog.Trace/LibDatadog/NativeInterop.cs

@@ -143,6 +143,6 @@ internal static extern TracerMemfdHandleResult StoreTracerMetadata(
         internal static extern void ConfiguratorDrop(IntPtr configurator);
 
         [DllImport(DllName, EntryPoint = "ddog_library_config_drop")]
-        internal static extern void LibraryConfigDrop(LibraryConfigs configs);
+        internal static extern void LibraryConfigDrop(LibraryConfigResult configs);
     }
 }