test fix

src/System.Windows.Forms/tests/UnitTests/System/Windows/Forms/ClipboardTests.cs

@@ -532,7 +532,7 @@ public unsafe void ClipBoard_GetClipboard_ReturnsProxy()
         // The proxy does not know about this interface, it should give back the real pointer.
         using var realDataPointer = proxy.Query<Com.IComCallableWrapper>();
         using var realDataPointerUnknown = realDataPointer.Query<Com.IUnknown>();
-        ((nint)proxyUnknown.Value).Should().NotBe((nint)realDataPointer.Value);
+        ((nint)proxyUnknown.Value).Should().NotBe((nint)realDataPointerUnknown.Value);
         ((nint)dataUnknown.Value).Should().Be((nint)realDataPointerUnknown.Value);
     }
 }