Fix lint errors

Author: ValentaTomas

packages/orchestrator/internal/sandbox/template/mask_template.go

@@ -38,7 +38,7 @@ func NewMaskTemplate(
 	return t
 }
 
-func (c *MaskTemplate) Close(ctx context.Context) error {
+func (c *MaskTemplate) Close(context.Context) error {
 	if c.memfile != nil {
 		return (*c.memfile).Close()
 	}

packages/orchestrator/internal/sandbox/uffd/testutils/page_mmap.go

@@ -36,9 +36,9 @@ func newMmap(size, pagesize uint64, flags int) ([]byte, uintptr, func() error, e
 		return nil, 0, nil, err
 	}
 
-	close := func() error {
+	closeMmap := func() error {
 		return syscall.Munmap(b)
 	}
 
-	return b, uintptr(unsafe.Pointer(&b[0])), close, nil
+	return b, uintptr(unsafe.Pointer(&b[0])), closeMmap, nil
 }