THRIFT-3943: resolve some high severity outstanding defects identified by coverity scan
Clients: C++, Lua
Patch: James E. King, III <jim.king@simplivity.com>

This closes #1109
diff --git a/lib/cpp/test/concurrency/ThreadManagerTests.h b/lib/cpp/test/concurrency/ThreadManagerTests.h
index 08e8179..b196813 100644
--- a/lib/cpp/test/concurrency/ThreadManagerTests.h
+++ b/lib/cpp/test/concurrency/ThreadManagerTests.h
@@ -45,7 +45,7 @@
 
   public:
     Task(Monitor& monitor, size_t& count, int64_t timeout)
-      : _monitor(monitor), _count(count), _timeout(timeout), _done(false) {}
+      : _monitor(monitor), _count(count), _timeout(timeout), _startTime(0), _endTime(0), _done(false) {}
 
     void run() {