Function mbedtls_ecdsa_free 

pub unsafe extern "C" fn mbedtls_ecdsa_free(
    ctx: *mut mbedtls_ecdsa_context,
)

\brief This function frees an ECDSA context.

\param ctx The ECDSA context to free. This may be \c NULL, in which case this function does nothing. If it is not \c NULL, it must be initialized.