Initialise raw pointer to null in FontBuilder constructor

Source/core/css/resolver/FontBuilderTest.cpp

Index: Source/core/css/resolver/FontBuilderTest.cpp
diff --git a/Source/core/css/resolver/FontBuilderTest.cpp b/Source/core/css/resolver/FontBuilderTest.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..231dc93627a8187cfd9c52cc54c348a9200b7f2f
--- /dev/null
+++ b/Source/core/css/resolver/FontBuilderTest.cpp
@@ -0,0 +1,26 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "core/css/resolver/FontBuilder.h"
+
+#include <gtest/gtest.h>
+
+namespace WebCore {
+
+class FontBuilderTest : public ::testing::Test {
+protected:
+    RenderStyle* getStyle(const FontBuilder& builder)
+    {
+        return builder.m_style;
+    }
+};
+
+TEST_F(FontBuilderTest, StylePointerInitialisation)
+{
+    FontBuilder builder;
+    EXPECT_EQ(0, getStyle(builder));
+}
+
+} // namespace WebCore