ci: replace golangci-lint with staticcheck

lapack/testlapack/dlangb_bench.go

@@ -6,6 +6,7 @@ package testlapack
 
 import (
 	"fmt"
+	"math"
 	"testing"
 
 	"golang.org/x/exp/rand"
@@ -14,6 +15,7 @@ import (
 )
 
 func DlangbBenchmark(b *testing.B, impl Dlangber) {
+	var result float64
 	rnd := rand.New(rand.NewSource(1))
 	for _, bm := range []struct {
 		n, k int
@@ -83,4 +85,7 @@ func DlangbBenchmark(b *testing.B, impl Dlangber) {
 			})
 		}
 	}
+	if math.IsNaN(result) {
+		b.Error("unexpected NaN result")
+	}
 }