In the object destructor, Disassociate the object from its Cocoa counterpart

but leave m_cocoaNSWindow intact so base class destructor can use it.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@21946 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/cocoa/dialog.mm

@@ -76,7 +76,7 @@ wxDialog::~wxDialog()
     wxLogDebug("Destroying");
     // setReleasedWhenClosed: NO
     [m_cocoaNSWindow close];
-    SetNSPanel(NULL);
+    DisassociateNSPanel(m_cocoaNSWindow);
 }
 
 void wxDialog::Cocoa_close(void)