Style Change: NULL->nullptr
DOCS_PREVIEW= https://skia.org/?cl=1316233002

Review URL: https://codereview.chromium.org/1316233002
diff --git a/bench/GLVec4ScalarBench.cpp b/bench/GLVec4ScalarBench.cpp
index e8c40f4..bbd282e 100644
--- a/bench/GLVec4ScalarBench.cpp
+++ b/bench/GLVec4ScalarBench.cpp
@@ -246,7 +246,7 @@
 void GLVec4ScalarBench::setup(const GrGLContext* ctx) {
     const GrGLInterface* gl = ctx->interface();
     if (!gl) {
-        SkFAIL("GL interface is NULL in setup()!\n");
+        SkFAIL("GL interface is nullptr in setup()!\n");
     }
     fFboTextureId = SetupFramebuffer(gl, kScreenWidth, kScreenHeight);