loplugin:redundantcast (clang-cl)

Change-Id: Id86b69f1bceb228d6bc5e383e7d98f177780d402
Reviewed-on: https://gerrit.libreoffice.org/67148
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

extensions/source/scanner/scanwin.cxx

@@ -339,7 +339,7 @@ bool Twain::InitializeNewShim(ScannerManager& rMgr, const VclPtr<vcl::Window>& x
         return false; // Have a shim for another task already!
 
     // hold reference to ScannerManager, to prevent premature death
-    mxMgr.set(static_cast<OWeakObject*>(const_cast<ScannerManager*>(mpCurMgr = &rMgr)),
+    mxMgr.set(static_cast<OWeakObject*>(mpCurMgr = &rMgr),
               css::uno::UNO_QUERY);
 
     mpThread.set(new ShimListenerThread(xTopWindow));