Like Mutex, failure to destroy a ConditionVariable on shutdown is a special case.

Change-Id: Id9b710a4676169abab5eabb0603947e599012be3
diff --git a/src/thread.cc b/src/thread.cc
index 4177913..00b5188 100644
--- a/src/thread.cc
+++ b/src/thread.cc
@@ -775,8 +775,8 @@
       peer_(NULL),
       top_of_managed_stack_(),
       top_of_managed_stack_pc_(0),
-      wait_mutex_(new Mutex("Thread wait mutex")),
-      wait_cond_(new ConditionVariable("Thread wait condition variable")),
+      wait_mutex_(new Mutex("a thread wait mutex")),
+      wait_cond_(new ConditionVariable("a thread wait condition variable")),
       wait_monitor_(NULL),
       interrupted_(false),
       wait_next_(NULL),