Style Change: NULL->nullptr

bench/subset/SubsetSingleBench.cpp

Index: bench/subset/SubsetSingleBench.cpp
diff --git a/bench/subset/SubsetSingleBench.cpp b/bench/subset/SubsetSingleBench.cpp
index 9713cfd4bdf9d161412f32e554c4394b68e33c4e..ce00f20947dd5a5d426e9643fe921857954c40c4 100644
--- a/bench/subset/SubsetSingleBench.cpp
+++ b/bench/subset/SubsetSingleBench.cpp
@@ -68,7 +68,7 @@ void SubsetSingleBench::onDraw(const int n, SkCanvas* canvas) {
                     SkScanlineDecoder::NewFromStream(fStream->duplicate()));
             const SkImageInfo info = scanlineDecoder->getInfo().makeColorType(fColorType);
             SkAutoTDeleteArray<uint8_t> row(new uint8_t[info.minRowBytes()]);
-            scanlineDecoder->start(info, NULL, colors, &colorCount);
+            scanlineDecoder->start(info, nullptr, colors, &colorCount);
 
             SkBitmap bitmap;
             SkImageInfo subsetInfo = info.makeWH(fSubsetWidth, fSubsetHeight);