Make MessageLoop::QuitClosure call Quit of the current MessageLoop at call time.

base/message_loop.cc

Index: base/message_loop.cc
diff --git a/base/message_loop.cc b/base/message_loop.cc
index f2e07b9fd1c4e8482b301e073bd33a5f1fb49b9f..45bad4889337ce8b6d96e53b898acf891beadc84 100644
--- a/base/message_loop.cc
+++ b/base/message_loop.cc
@@ -365,10 +365,13 @@ void MessageLoop::QuitNow() {
   }
 }
 
+static void QuitCurrent() {
+  MessageLoop::current()->Quit();
+}
+
 // static
 base::Closure MessageLoop::QuitClosure() {
-  return base::Bind(&MessageLoop::Quit,
-                    base::Unretained(MessageLoop::current()));
+  return base::Bind(&QuitCurrent);
 }
 
 void MessageLoop::SetNestableTasksAllowed(bool allowed) {