Remove delegates before releasing the native object, so that we don't have delegate methods getting called during destruction.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58802 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/osx/cocoa/menu.mm

@@ -186,6 +186,7 @@ protected :
 
 wxMenuCocoaImpl::~wxMenuCocoaImpl()
 {
+    [m_osxMenu setDelegate:nil];
     [m_osxMenu release];
 }
 

src/osx/cocoa/nonownedwnd.mm

@@ -227,6 +227,7 @@ wxNonOwnedWindowCocoaImpl::wxNonOwnedWindowCocoaImpl()
     
 wxNonOwnedWindowCocoaImpl::~wxNonOwnedWindowCocoaImpl()
 {
+    [m_macWindow setDelegate:nil];
     [m_macWindow release];
 }
 

src/osx/cocoa/toolbar.mm

@@ -633,6 +633,7 @@ wxToolBar::~wxToolBar()
         if (m_macUsesNativeToolbar)
             MacInstallNativeToolbar( false );
 
+        [(NSToolbar*)m_macToolbar setDelegate:nil];
         [(NSToolbar*)m_macToolbar release];
         m_macToolbar = NULL;
     }