Improved loplugin:redundantcast (const-qualified typedefs): sd

Change-Id: I043576ca1fa83180b326f65b05f6bc5c21814e82
Reviewed-on: https://gerrit.libreoffice.org/56701
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

sd/source/core/stlsheet.cxx

@@ -1224,7 +1224,7 @@ PropertyState SAL_CALL SdStyleSheet::getPropertyState( const OUString& PropertyN
             case XATTR_LINESTART:
             case XATTR_LINEDASH:
                 {
-                    const NameOrIndex* pItem = rStyleSet.GetItem<NameOrIndex>(static_cast<sal_uInt16>(pEntry->nWID));
+                    const NameOrIndex* pItem = rStyleSet.GetItem<NameOrIndex>(pEntry->nWID);
                     if( ( pItem == nullptr ) || pItem->GetName().isEmpty() )
                         eState = PropertyState_DEFAULT_VALUE;
                 }