fix(lint): Fix new lint errors (#812)

Signed-off-by: Dave Henderson <dhenderson@gmail.com>

.golangci.yml

@@ -33,7 +33,6 @@ linters:
     - errcheck
     - errorlint
     - exhaustive
-    - exportloopref
     - fatcontext
     - funlen
     - gci

consulfs/consul_test.go

@@ -159,7 +159,9 @@ func TestNew(t *testing.T) {
 }
 
 func TestWithContext(t *testing.T) {
-	ctx := context.WithValue(context.Background(), struct{}{}, "foo")
+	type key struct{}
+
+	ctx := context.WithValue(context.Background(), key{}, "foo")
 
 	fsys := &consulFS{ctx: context.Background()}
 	fsys = fsys.WithContext(ctx).(*consulFS)

vaultfs/vault.go

@@ -486,7 +486,7 @@ func (f *vaultFile) list() ([]string, error) {
 
 	dirkeys := make([]string, len(k))
 
-	for i := range len(k) {
+	for i := range k {
 		if s, ok := k[i].(string); ok {
 			dirkeys[i] = s
 		}

vaultfs/vault_test.go

@@ -84,7 +84,9 @@ func TestNew(t *testing.T) {
 }
 
 func TestWithContext(t *testing.T) {
-	ctx := context.WithValue(context.Background(), struct{}{}, "foo")
+	type key struct{}
+
+	ctx := context.WithValue(context.Background(), key{}, "foo")
 
 	fsys := &vaultFS{ctx: context.Background()}
 	fsys = fsys.WithContext(ctx).(*vaultFS)