macosx: prevent VLC from crashing on quit while playing by adding additional checks

NEWS

@@ -13,9 +13,10 @@ Security updates:
 Mac OS X Interface:
  * Corrected fullscreen behavior on multi-screen setups
  * Improved behavior of the Preferences window
+ * VLC no longer crashes on quit while playing
 
-Localisation:
- * Update Romanian and Polish languages
+Localization:
+ * Updated Romanian and Polish translations
 
 Changes between 0.8.6c and 0.8.6d:
 ----------------------------------

modules/gui/macosx/intf.m

@@ -191,10 +191,14 @@ static int PlaylistChanged( vlc_object_t *p_this, const char *psz_variable,
                      vlc_value_t old_val, vlc_value_t new_val, void *param )
 {
     intf_thread_t * p_intf = VLCIntf;
-    p_intf->p_sys->b_playlist_update = VLC_TRUE;
-    p_intf->p_sys->b_intf_update = VLC_TRUE;
-    p_intf->p_sys->b_playmode_update = VLC_TRUE;
-    return VLC_SUCCESS;
+    if( p_intf && !p_intf->b_die )
+    {
+        p_intf->p_sys->b_playlist_update = VLC_TRUE;
+        p_intf->p_sys->b_intf_update = VLC_TRUE;
+        p_intf->p_sys->b_playmode_update = VLC_TRUE;
+        return VLC_SUCCESS;
+    }
+    return VLC_EGENERIC;
 }
 
 /*****************************************************************************

modules/gui/macosx/vout.m

@@ -413,8 +413,9 @@ int DeviceCallback( vlc_object_t *p_this, const char *psz_variable,
 - (void)manage
 {
     /* Disable Screensaver, when we're playing something, but allow it on pause */
-    if( VLCIntf->p_sys->i_play_status == PLAYING_S )
-        UpdateSystemActivity( UsrActivity );
+    if( VLCIntf->p_sys && !VLCIntf->b_die )
+        if( VLCIntf->p_sys->i_play_status == PLAYING_S )
+            UpdateSystemActivity( UsrActivity );
 }
 
 - (id)getWindow