QUIC - (no behavior change) s/NULL/nullptr/g in .../quic/...

net/quic/crypto/cert_compressor.cc

Index: net/quic/crypto/cert_compressor.cc
diff --git a/net/quic/crypto/cert_compressor.cc b/net/quic/crypto/cert_compressor.cc
index 023701bff95b44089e4b295cc52812bdcaa2c4cc..ba42152766372d67ad44bb65a6b9413c321f5fd0 100644
--- a/net/quic/crypto/cert_compressor.cc
+++ b/net/quic/crypto/cert_compressor.cc
@@ -422,7 +422,7 @@ class ScopedZLib {
     DEFLATE,
   };
 
-  explicit ScopedZLib(Type type) : z_(NULL), type_(type) {}
+  explicit ScopedZLib(Type type) : z_(nullptr), type_(type) {}
 
   void reset(z_stream* z) {
     Clear();
@@ -444,7 +444,7 @@ class ScopedZLib {
     } else {
       inflateEnd(z_);
     }
-    z_ = NULL;
+    z_ = nullptr;
   }
 
   z_stream* z_;