const this up

Change-Id: I878ba62345925a8396b0b2a5f38f069148c8a6b5
Reviewed-on: https://gerrit.libreoffice.org/62071
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

sfx2/source/doc/sfxbasemodel.cxx

@@ -2101,7 +2101,7 @@ Sequence< datatransfer::DataFlavor > SAL_CALL SfxBaseModel::getTransferDataFlavo
 {
     SfxModelGuard aGuard( *this );
 
-    sal_Int32 nSuppFlavors = GraphicHelper::supportsMetaFileHandle_Impl() ? 10 : 8;
+    const sal_Int32 nSuppFlavors = GraphicHelper::supportsMetaFileHandle_Impl() ? 10 : 8;
     Sequence< datatransfer::DataFlavor > aFlavorSeq( nSuppFlavors );
 
     aFlavorSeq[0].MimeType =