Need to initialize m_message and m_caption on 2.8 branch.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@49770 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/cocoa/msgdlg.mm

@@ -50,8 +50,8 @@ wxCocoaMessageDialog::wxCocoaMessageDialog(wxWindow *parent,
                         const wxPoint& pos) : wxDialog(parent,message,caption,style)
 {
 
-    //m_caption = caption;
-    //m_message = message;
+    m_caption = caption;
+    m_message = message;
 
     //wxTopLevelWindows.Append((wxWindowBase*)this);
     wxTopLevelWindows.Append(this);