separate assert in case the control ref is already null

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@44323 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

diff --git a/src/mac/carbon/utils.cpp b/src/mac/carbon/utils.cpp
index 85a38d0b49f9b57b540423bc0217be4383404a80..d491c42b04dc90f870381d541c4ba544bbd200dd 100644 (file)
--- a/src/mac/carbon/utils.cpp
+++ b/src/mac/carbon/utils.cpp
@@ -863,6 +863,7 @@ void wxMacControl::Init()
 
 void wxMacControl::Dispose()
 {
+    wxASSERT_MSG( m_controlRef != NULL , wxT("Control Handle already NULL, Dispose called twice ?") );
     wxASSERT_MSG( IsValidControlHandle(m_controlRef) , wxT("Invalid Control Handle (maybe already released) in Dispose") );
 
     // we cannot check the ref count here anymore, as autorelease objects might delete their refs later