Compile fixes, warnings etc.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@993 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/helpext.cpp

@@ -352,14 +352,14 @@ kbList::iterator::operator*()
 kbList::iterator &
 kbList::iterator::operator++()
 {
-   node  = node ? node->next : NULL;
+   node  = node ? node->next : (kbListNode*)NULL;
    return *this;
 }
 
 kbList::iterator &
 kbList::iterator::operator--()
 {
-   node = node ? node->prev : NULL; 
+   node = node ? node->prev : (kbListNode*)NULL; 
    return *this;
 }
 kbList::iterator &