src: replace NULL with nullptr

Now that we are building with C++11 features enabled, replace use
of NULL with nullptr.

The benefit of using nullptr is that it can never be confused for
an integral type because it does not support implicit conversions
to integral types except boolean - unlike NULL, which is defined
as a literal `0`.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/fs_event_wrap.cc b/src/fs_event_wrap.cc
index 06e5ef44d9..8f381b40a7 100644
--- a/src/fs_event_wrap.cc
+++ b/src/fs_event_wrap.cc
@@ -175,7 +175,7 @@ void FSEventWrap::OnEvent(uv_fs_event_t* handle, const char* filename,
     Null(env->isolate())
   };
 
-  if (filename != NULL) {
+  if (filename != nullptr) {
     argv[2] = OneByteString(env->isolate(), filename);
   }
 
@@ -186,7 +186,7 @@ void FSEventWrap::OnEvent(uv_fs_event_t* handle, const char* filename,
 void FSEventWrap::Close(const FunctionCallbackInfo<Value>& args) {
   FSEventWrap* wrap = Unwrap<FSEventWrap>(args.Holder());
 
-  if (wrap == NULL || wrap->initialized_ == false)
+  if (wrap == nullptr || wrap->initialized_ == false)
     return;
   wrap->initialized_ = false;