coverity#1265807 Dereference null return value

Change-Id: I545a4ecee209d4198caebbcf394eccfe113a32a4

sc/source/ui/drawfunc/drtxtob2.cxx

@@ -208,8 +208,11 @@ void ScDrawTextObjectBar::GetFormTextState(SfxItemSet& rSet)
     sal_uInt16              nId = SvxFontWorkChildWindow::GetChildWindowId();
 
     SfxViewFrame* pViewFrm = pViewData->GetViewShell()->GetViewFrame();
-    if ( pViewFrm->HasChildWindow(nId) )
-        pDlg = static_cast<SvxFontWorkDialog*>(pViewFrm->GetChildWindow(nId)->GetWindow());
+    if (pViewFrm->HasChildWindow(nId))
+    {
+        SfxChildWindow* pWnd = pViewFrm->GetChildWindow(nId);
+        pDlg = pWnd ? static_cast<SvxFontWorkDialog*>(pWnd->GetWindow()) : NULL;
+    }
 
     if ( rMarkList.GetMarkCount() == 1 )
         pObj = rMarkList.GetMark(0)->GetMarkedSdrObj();

sc/source/ui/view/imapwrap.cxx

@@ -30,9 +30,8 @@ sal_uInt16 ScIMapChildWindowId()
 SvxIMapDlg* ScGetIMapDlg()
 {
     //! pass view frame here and in SVXIMAPDLG()
-
     SfxViewFrame* pViewFrm = SfxViewFrame::Current();
-    if( pViewFrm && pViewFrm->HasChildWindow( SvxIMapDlgChildWindow::GetChildWindowId() ) )
+    if (pViewFrm && pViewFrm->HasChildWindow(SvxIMapDlgChildWindow::GetChildWindowId()))
         return SVXIMAPDLG();
     else
         return NULL;