Style Change: NULL->nullptr

bench/GLInstancedArraysBench.cpp

Index: bench/GLInstancedArraysBench.cpp
diff --git a/bench/GLInstancedArraysBench.cpp b/bench/GLInstancedArraysBench.cpp
index 8ffbaf03fe785f21daee01b622f110fa46f83f49..5cb4c069ab4795edef759b24b1129473ebbd0f45 100644
--- a/bench/GLInstancedArraysBench.cpp
+++ b/bench/GLInstancedArraysBench.cpp
@@ -172,7 +172,7 @@ static void setup_matrices(int numQuads, Func f) {
 const GrGLContext* GLCpuPosInstancedArraysBench::onGetGLContext(const GrGLContext* ctx) {
     // We only care about gpus with drawArraysInstanced support
     if (!ctx->interface()->fFunctions.fDrawArraysInstanced) {
-        return NULL;
+        return nullptr;
     }
     return ctx;
 }