A logic question in `msolve_julia`

[wegank]

In the following file:

msolve/src/msolve/msolve.c

Lines 5566 to 5577 in 6c9d63e

	/* clean up data storage, but do not free data handled by julia */
	free(gens);
	gens = NULL;
	*rp_var_namesp = rp_var_names;
	/* free parametrization */
	if(param != NULL && gens->field_char){
	free_fglm_param(param);
	}
	mpz_param_clear(mpz_param);

why do we perform a check on gens->field_char with gens being NULL?