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, 8 insertions, 8 deletions

diff --git a/src/node_zlib.cc b/src/node_zlib.cc
index 22e62d9fb9..9ad0ad9886 100644
--- a/src/node_zlib.cc
+++ b/src/node_zlib.cc
@@ -76,7 +76,7 @@ class ZCtx : public AsyncWrap {
   ZCtx(Environment* env, Local<Object> wrap, node_zlib_mode mode)
       : AsyncWrap(env, wrap, AsyncWrap::PROVIDER_ZLIB),
         chunk_size_(0),
-        dictionary_(NULL),
+        dictionary_(nullptr),
         dictionary_len_(0),
         err_(0),
         flush_(0),
@@ -120,9 +120,9 @@ class ZCtx : public AsyncWrap {
     }
     mode_ = NONE;
 
-    if (dictionary_ != NULL) {
+    if (dictionary_ != nullptr) {
       delete[] dictionary_;
-      dictionary_ = NULL;
+      dictionary_ = nullptr;
     }
   }
 
@@ -259,7 +259,7 @@ class ZCtx : public AsyncWrap {
         ctx->err_ = inflate(&ctx->strm_, ctx->flush_);
 
         // If data was encoded with dictionary
-        if (ctx->err_ == Z_NEED_DICT && ctx->dictionary_ != NULL) {
+        if (ctx->err_ == Z_NEED_DICT && ctx->dictionary_ != nullptr) {
           // Load it
           ctx->err_ = inflateSetDictionary(&ctx->strm_,
                                            ctx->dictionary_,
@@ -296,7 +296,7 @@ class ZCtx : public AsyncWrap {
       // normal statuses, not fatal
       break;
     case Z_NEED_DICT:
-      if (ctx->dictionary_ == NULL)
+      if (ctx->dictionary_ == nullptr)
         ZCtx::Error(ctx, "Missing dictionary");
       else
         ZCtx::Error(ctx, "Bad dictionary");
@@ -346,7 +346,7 @@ class ZCtx : public AsyncWrap {
     // If you hit this assertion, you forgot to enter the v8::Context first.
     CHECK_EQ(env->context(), env->isolate()->GetCurrentContext());
 
-    if (ctx->strm_.msg != NULL) {
+    if (ctx->strm_.msg != nullptr) {
       message = ctx->strm_.msg;
     }
 
@@ -402,7 +402,7 @@ class ZCtx : public AsyncWrap {
             strategy == Z_FIXED ||
             strategy == Z_DEFAULT_STRATEGY) && "invalid strategy");
 
-    char* dictionary = NULL;
+    char* dictionary = nullptr;
     size_t dictionary_len = 0;
     if (args.Length() >= 5 && Buffer::HasInstance(args[4])) {
       Local<Object> dictionary_ = args[4]->ToObject();
@@ -495,7 +495,7 @@ class ZCtx : public AsyncWrap {
   }
 
   static void SetDictionary(ZCtx* ctx) {
-    if (ctx->dictionary_ == NULL)
+    if (ctx->dictionary_ == nullptr)
       return;
 
     ctx->err_ = Z_OK;