skins2: fix memory leak

modules/gui/skins2/src/dialogs.cpp

@@ -332,14 +332,14 @@ void Dialogs::showPopupMenu( bool bShow, int popupType = INTF_DIALOG_POPUPMENU )
 
 void Dialogs::showInteraction( interaction_dialog_t *p_dialog )
 {
+    if( m_pProvider && m_pProvider->pf_show_dialog )
+    {
         intf_dialog_args_t *p_arg = (intf_dialog_args_t *)
                                     calloc( 1, sizeof(intf_dialog_args_t) );
 
         p_arg->p_dialog = p_dialog;
         p_arg->p_intf = getIntf();
 
-    if( m_pProvider && m_pProvider->pf_show_dialog )
-    {
         m_pProvider->pf_show_dialog( m_pProvider, INTF_DIALOG_INTERACTION,
                                      0, p_arg );
     }