Replace NULL with nullptr

Also fixed some lines that were too long, and a few other minor
details.

Change-Id: I6efba5fb6e03eb5d0a300fddb2a75bf8e2f175cb
diff --git a/runtime/intern_table_test.cc b/runtime/intern_table_test.cc
index d462e14..194d0af 100644
--- a/runtime/intern_table_test.cc
+++ b/runtime/intern_table_test.cc
@@ -38,8 +38,8 @@
   EXPECT_TRUE(foo_1->Equals("foo"));
   EXPECT_TRUE(foo_2->Equals("foo"));
   EXPECT_TRUE(foo_3->Equals("foo"));
-  EXPECT_TRUE(foo_1.Get() != NULL);
-  EXPECT_TRUE(foo_2.Get() != NULL);
+  EXPECT_TRUE(foo_1.Get() != nullptr);
+  EXPECT_TRUE(foo_2.Get() != nullptr);
   EXPECT_EQ(foo_1.Get(), foo_2.Get());
   EXPECT_NE(foo_1.Get(), bar.Get());
   EXPECT_NE(foo_2.Get(), bar.Get());