* skins2/src/skin_main.cpp: Fixed a crash in the preferences, reported by Trax

modules/gui/skins2/src/skin_main.cpp

@@ -365,6 +365,9 @@ static int onSystrayChange( vlc_object_t *pObj, const char *pVariable,
         return VLC_EGENERIC;
     }
 
+    // Check that we found the correct interface (same check as for the demux)
+    if( var_Type( pIntf, "skin-to-load" ) == VLC_VAR_STRING )
+    {
         AsyncQueue *pQueue = AsyncQueue::instance( pIntf );
         if( newVal.b_bool )
         {
@@ -376,6 +379,7 @@ static int onSystrayChange( vlc_object_t *pObj, const char *pVariable,
             CmdRemoveFromTray *pCmd = new CmdRemoveFromTray( pIntf );
             pQueue->push( CmdGenericPtr( pCmd ) );
         }
+    }
 
     vlc_object_release( pIntf );
     return VLC_SUCCESS;
@@ -395,6 +399,9 @@ static int onTaskBarChange( vlc_object_t *pObj, const char *pVariable,
         return VLC_EGENERIC;
     }
 
+    // Check that we found the correct interface (same check as for the demux)
+    if( var_Type( pIntf, "skin-to-load" ) == VLC_VAR_STRING )
+    {
         AsyncQueue *pQueue = AsyncQueue::instance( pIntf );
         if( newVal.b_bool )
         {
@@ -406,6 +413,7 @@ static int onTaskBarChange( vlc_object_t *pObj, const char *pVariable,
             CmdRemoveFromTaskBar *pCmd = new CmdRemoveFromTaskBar( pIntf );
             pQueue->push( CmdGenericPtr( pCmd ) );
         }
+    }
 
     vlc_object_release( pIntf );
     return VLC_SUCCESS;