Protect against event emission during dispose.

Change-Id: I8c97fdb637a8ea4d50bef5815ef3716a4be03688

sw/source/uibase/misc/redlndlg.cxx

@@ -254,6 +254,9 @@ void SwRedlineAcceptDlg::InitAuthors()
 {
     SwWrtShell* pSh = ::GetActiveView()->GetWrtShellPtr();
 
+    if (!aTabPagesCTRL)
+        return;
+
     SvxTPFilter *pFilterPage = aTabPagesCTRL->GetFilterPage();
 
     std::vector<OUString> aStrings;

vcl/source/control/tabctrl.cxx

@@ -1357,7 +1357,7 @@ void TabControl::GetFocus()
 
 void TabControl::LoseFocus()
 {
-    if( ! mpTabCtrlData->mpListBox )
+    if( mpTabCtrlData && ! mpTabCtrlData->mpListBox )
         HideFocus();
     Control::LoseFocus();
 }