pkcs15-init: Release allocated sc_pkcs15_card after erasing card
pkcs15-init: Release allocated sc_pkcs15_card after erasing card

`do_erase()` function calls `sc_pkcs15init_erase_card()`, that
gets pointer to sc_pkcs15_card as argument, but after calling `sc_pkcs15_bind()`
overwrites this pointer with newly allocated sc_pkcs15_card, which is
then stored in profile->p15_data

OpenSC/OpenSC,LudovicRousseau/OpenSC,metsma/OpenSC,metsma/OpenSC,LudovicRousseau/OpenSC,mouse07410/OpenSC,fabled/OpenSC,fabled/OpenSC,dengert/OpenSC,dengert/OpenSC,dengert/OpenSC,OpenSC/OpenSC,mouse07410/OpenSC,fabled/OpenSC,fabled/OpenSC,LudovicRousseau/OpenSC,metsma/OpenSC,mouse07410/OpenSC,philipWendland/OpenSC,OpenSC/OpenSC,philipWendland/OpenSC,philipWendland/OpenSC