Build: Fix node 10 test failures

test/file-operations.js

@@ -707,6 +707,9 @@ describe('getOwnerDiff', function() {
 });
 
 describe('closeFd', function() {
+  // This is just a very large number since node broke our tests by disallowing -1
+  // We're also doing some hacky version matching because node 0.12 accepts 10000 on Windows (and fails the test)
+  var invalidFd = process.version[1] === '0' ? -1 : 10000;
 
   it('calls the callback with propagated error if fd is not a number', function(done) {
     var propagatedError = new Error();
@@ -719,7 +722,7 @@ describe('closeFd', function() {
   });
 
   it('calls the callback with close error if no error to propagate', function(done) {
-    closeFd(null, -1, function(err) {
+    closeFd(null, invalidFd, function(err) {
       expect(err).toExist();
 
       done();
@@ -729,7 +732,7 @@ describe('closeFd', function() {
   it('calls the callback with propagated error if close errors', function(done) {
     var propagatedError = new Error();
 
-    closeFd(propagatedError, -1, function(err) {
+    closeFd(propagatedError, invalidFd, function(err) {
       expect(err).toEqual(propagatedError);
 
       done();