-Wuninitialized fixes

base/message_loop.cc

 // Copyright (c) 2010 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 "base/message_loop.h"
 
 #include <algorithm>
 
 #include "base/compiler_specific.h"
 #include "base/lazy_instance.h"
@@ skipping 147 matching lines @@
   DCHECK_EQ(this, current());
 
   DCHECK(!state_);
 
   // Clean up any unprocessed tasks, but take care: deleting a task could
   // result in the addition of more tasks (e.g., via DeleteSoon).  We set a
   // limit on the number of times we will allow a deleted task to generate more
   // tasks.  Normally, we should only pass through this loop once or twice.  If
   // we end up hitting the loop limit, then it is probably due to one task that
   // is being stubborn.  Inspect the queues to see who is left.
-  bool did_work;
+  bool did_work = false;  // clang pr9061
   for (int i = 0; i < 100; ++i) {
     DeletePendingTasks();
     ReloadWorkQueue();
     // If we end up with empty queues, then break out of the loop.
     did_work = DeletePendingTasks();
     if (!did_work)
       break;
   }
   DCHECK(!did_work);
 
@@ skipping 523 matching lines @@
                                            Watcher *delegate) {
   return pump_libevent()->WatchFileDescriptor(
       fd,
       persistent,
       static_cast<base::MessagePumpLibevent::Mode>(mode),
       controller,
       delegate);
 }
 
 #endif