Resolves: tdf#100896 crash in hyperlink dialog

regression from...

commit 98747742
Author: Noel Grandin <noel@peralex.com>
Date:   Fri Jun 24 13:12:25 2016 +0200

    loplugin:singlevalfields in cui

which cut too deep

Change-Id: I0e42eed48196c9e037ba343eea93c2c854c0991c

cui/source/dialogs/iconcdlg.cxx

@@ -412,7 +412,17 @@ void IconChoiceDialog::ActivatePageImpl ()
     {
         if ( !pData->pPage )
         {
-            pData->pPage = (pData->fnCreatePage)( m_pTabContainer, this, *CreateInputItemSet( mnCurrentPageId ) );
+            const SfxItemSet* pTmpSet = nullptr;
+
+            if ( pSet )
+            {
+                pTmpSet = pSet;
+            }
+
+            if ( pTmpSet )
+                pData->pPage = (pData->fnCreatePage)( m_pTabContainer, this, *pTmpSet );
+            else
+                pData->pPage = (pData->fnCreatePage)( m_pTabContainer, this, *CreateInputItemSet( mnCurrentPageId ) );
 
             pData->pPage->Reset( *pSet );