e_comp_wl: added e_pixmap_cdata_set to clean up pixmap's E_Comp_Wl_Client_Data before freeing E_Client
e_comp_wl: added e_pixmap_cdata_set to clean up pixmap's E_Comp_Wl_Client_Data before freeing E_Client

Change-Id: Id64563f179a84b04bb7d2c57b941ef61f7bdc390

tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment,tizenorg/platform.upstream.enlightenment