I did not know this leak memory or not (gtk_object_set_data)

["chao yeaj" <yeajchao gmail com>]

Hello everyone
   I use function    ``gtk_object_set_data'' to set data to object

my code like this:


/***********************************************************************************/
guint *p = NULL;
p = g_malloc0(sizeof(guint)):

gtk_object_set_data(GTK_OBJECT(button),"key",p);
/*********************************************************************************/




    I did not know whether I should add the following  code or not
/***************************************************************/
g_free(p);
/*******************************************************************/

    I need your hints
Any comments would be much appricated,thanks in advance