fix double free in SwXTextView::removeSelectionChangeListener

dbaccess_complex segfaults because ptr_vector::erase actually deletes
the element; also, a std::vector is more appropriate to store smart ptr.
(regression from 8533a191)

sw/source/ui/inc/unotxvw.hxx

@@ -56,7 +56,7 @@ class SdrObject;
 class SwView;
 
 typedef ::com::sun::star::uno::Reference< ::com::sun::star::view::XSelectionChangeListener > XSelectionChangeListenerRef;
-typedef boost::ptr_vector<XSelectionChangeListenerRef> SelectionChangeListenerArr;
+typedef std::vector<XSelectionChangeListenerRef> SelectionChangeListenerArr;
 
 class SwXTextView :
     public ::com::sun::star::view::XSelectionSupplier,

sw/source/ui/uno/unotxvw.cxx

@@ -606,9 +606,7 @@ void SwXTextView::addSelectionChangeListener(
                                     throw( uno::RuntimeException )
 {
     SolarMutexGuard aGuard;
-    uno::Reference< view::XSelectionChangeListener > * pInsert = new uno::Reference< view::XSelectionChangeListener > ;
-    *pInsert = rxListener;
-    aSelChangedListeners.push_back(pInsert);
+    aSelChangedListeners.push_back(rxListener);
 }
 
 void SwXTextView::removeSelectionChangeListener(
@@ -625,7 +623,6 @@ void SwXTextView::removeSelectionChangeListener(
         if(pLeft == pRight)
         {
             aSelChangedListeners.erase(it);
-            delete pElem;
             break;
         }
     }