code style refactor on if statement

[jeffeaton]

Very small note: this conditional looks a bit unnecessary clunky with the nested conditionals (the else at line 100). I suspect this could be rationalised with more unified style.

leapfrog/leapfrog-core/include/models/adult_hiv_model_simulation.hpp

Lines 94 to 108 in 9cbdfe5

	if constexpr (ModelVariant::run_goals) {
	if (hiv_step==0) {
	state_next.hv.new_infections_dp = 0.0;//init new infections from DP
	}
	calc_new_infections_agesex_goals(hiv_step);
	}
	else {
	if (p_ha.incidence_model_choice == SS::INCIDMOD_DIRECTINCID_HTS) {
	calc_new_infections_agesex(hiv_step);
	} else if (p_ha.incidence_model_choice == SS::INCIDMOD_TRANSMRATE_HTS){
	calc_new_infections_incidmod_transmrate(hiv_step);
	} else {
	throw std::invalid_argument("Incidence model choice not vaild\n");
	}
	}