Fixed crash on exit caused by deleting old logger in wxLogChain dtor.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@67119 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

docs/changes.txt

@@ -99,6 +99,7 @@ All:
 - Added wxT_2() for forward compatibility with wxWidgets 3. Use it in
   initialization of wxCmdLineEntryDesc struct elements and (very few) other
   places where wxT() is required currently but won't be allowed in v3.
+- Fixed crash on exit caused by deleting old logger in wxLogChain dtor.
 
 All (GUI):
 

src/common/log.cpp

@@ -631,7 +631,7 @@ wxLogChain::wxLogChain(wxLog *logger)
 
 wxLogChain::~wxLogChain()
 {
-    delete m_logOld;
+    wxLog::SetActiveTarget(m_logOld);
 
     if ( m_logNew != this )
         delete m_logNew;