simplify cyclomatic complexity auxiliarly value computation
simplify cyclomatic complexity auxiliarly value computation

previously the HIR was unnecessarily traversed twice
graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust