msi: Cleanup the dialog event subscriptions when destroying the dialog.

dlls/msi/dialog.c

@@ -3429,6 +3429,9 @@ void msi_dialog_destroy( msi_dialog *dialog )
     if( dialog->hwnd )
         DestroyWindow( dialog->hwnd );
 
+    /* unsubscribe events */
+    ControlEvent_CleanupDialogSubscriptions(dialog->package, dialog->name);
+
     /* destroy the list of controls */
     while( !list_empty( &dialog->controls ) )
     {

dlls/msi/events.c

@@ -54,7 +54,6 @@ struct subscriber {
 };
 
 static UINT ControlEvent_HandleControlEvent(MSIPACKAGE *, LPCWSTR, LPCWSTR, msi_dialog*);
-static VOID ControlEvent_CleanupDialogSubscriptions(MSIPACKAGE *package, LPWSTR dialog);
 
 /*
  * Create a dialog box and run it if it's modal
@@ -321,7 +320,7 @@ VOID ControlEvent_FireSubscribedEvent( MSIPACKAGE *package, LPCWSTR event,
     }
 }
 
-static VOID ControlEvent_CleanupDialogSubscriptions(MSIPACKAGE *package, LPWSTR dialog)
+VOID ControlEvent_CleanupDialogSubscriptions(MSIPACKAGE *package, LPWSTR dialog)
 {
     struct list *i, *t;
     struct subscriber *sub;

dlls/msi/msipriv.h

@@ -781,6 +781,7 @@ extern void msi_ui_error( DWORD msg_id, DWORD type );
 /* control event stuff */
 extern VOID ControlEvent_FireSubscribedEvent(MSIPACKAGE *package, LPCWSTR event,
                                       MSIRECORD *data);
+extern VOID ControlEvent_CleanupDialogSubscriptions(MSIPACKAGE *package, LPWSTR dialog);
 extern VOID ControlEvent_CleanupSubscriptions(MSIPACKAGE *package);
 extern VOID ControlEvent_SubscribeToEvent(MSIPACKAGE *package, msi_dialog *dialog,
                                       LPCWSTR event, LPCWSTR control, LPCWSTR attribute);