SwPaM::Find: when no more result in the shape, unmark it

So that when the next result is found in the normal Writer text, only
that will be selected. Having both shape selection + Writer text
selection is confusing.

Change-Id: I52d399e7224b472f76d39d93ffc394c2e3107a86

sw/source/core/crsr/findtxt.cxx

@@ -305,8 +305,11 @@ bool SwPaM::Find( const SearchOptions& rSearchOpt, bool bSearchInNotes , utl::Te
                     aSearchItem.SetBackward(!bSrchForward);
                     sal_uInt16 nResult = pSdrView->GetTextEditOutlinerView()->StartSearchAndReplace(aSearchItem);
                     if (!nResult)
+                    {
                         // If not found, end the text edit.
                         pSdrView->SdrEndTextEdit();
+                        pSdrView->UnmarkAll();
+                    }
                     else
                     {
                         bFound = true;