sw lok: assign a parent window to property dialog

Change-Id: Ief98b93502c3c69f84e7de47393718370a839208
Reviewed-on: https://gerrit.libreoffice.org/49926Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Henry Castro <hcastro@collabora.com>

sw/source/uibase/app/docsh2.cxx

@@ -142,7 +142,7 @@ using namespace ::sfx2;
 // create DocInfo (virtual)
 VclPtr<SfxDocumentInfoDialog> SwDocShell::CreateDocumentInfoDialog(const SfxItemSet &rSet)
 {
-    VclPtr<SfxDocumentInfoDialog> pDlg = VclPtr<SfxDocumentInfoDialog>::Create(nullptr, rSet);
+    VclPtr<SfxDocumentInfoDialog> pDlg = VclPtr<SfxDocumentInfoDialog>::Create(&GetView()->GetViewFrame()->GetWindow(), rSet);
     //only with statistics, when this document is being shown, not
     //from within the Doc-Manager
     SwDocShell* pDocSh = static_cast<SwDocShell*>( SfxObjectShell::Current());