The fc_close function closes a file opened using fc_open. This function should only be called with files opened using fc_open.
void fc_close(PRFileDesc *fd, FcHdl *hDl);
PRFileDesc *fd is a valid pointer returned from a prior call to fc_open.
FcHdl *hDl is a valid pointer to a structure of type FcHdl. This pointer must have been initialized by a prior call to fc_open.