Allow linker initialization of lazy instance

base/message_loop.cc

Index: base/message_loop.cc
diff --git a/base/message_loop.cc b/base/message_loop.cc
index f72ded103660e61a0ff12f4fdcb2bdaf4281861f..98fea1dc4506c02e863383e237c75f3e2a85669a 100644
--- a/base/message_loop.cc
+++ b/base/message_loop.cc
@@ -42,8 +42,8 @@ namespace {
 
 // A lazily created thread local storage for quick access to a thread's message
 // loop, if one exists.  This should be safe and free of static constructors.
-base::LazyInstance<base::ThreadLocalPointer<MessageLoop> > lazy_tls_ptr(
-    base::LINKER_INITIALIZED);
+base::LazyInstance<base::ThreadLocalPointer<MessageLoop> > lazy_tls_ptr =
+    LINKER_ZERO_INITIALIZED;
 
 // Logical events for Histogram profiling. Run with -message-loop-histogrammer
 // to get an accounting of messages and actions taken on each thread.