Actually manage memory in the old-style AOS logging

LeakSanitizer should be happy with it now. It's also still just as
thread-safe.

Change-Id: Id09a0349657cf4f719267b053f0ea3d8ec366256
diff --git a/aos/ipc_lib/ipc_comparison.cc b/aos/ipc_lib/ipc_comparison.cc
index 592327e..9191eae 100644
--- a/aos/ipc_lib/ipc_comparison.cc
+++ b/aos/ipc_lib/ipc_comparison.cc
@@ -902,8 +902,7 @@
   ::gflags::ParseCommandLineFlags(&argc, &argv, true);
 
   ::aos::InitNRT();
-  ::aos::logging::SetImplementation(
-      new ::aos::logging::StreamLogImplementation(stdout));
+  ::aos::logging::Init();
 
   return ::aos::Main(argc, argv);
 }