THRIFT-916 compile with -Wall -Wextra without warning on Debian Lenny


git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1036250 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/concurrency/test/ThreadManagerTests.h b/lib/cpp/src/concurrency/test/ThreadManagerTests.h
index 129a9a2..b6b5c3e 100644
--- a/lib/cpp/src/concurrency/test/ThreadManagerTests.h
+++ b/lib/cpp/src/concurrency/test/ThreadManagerTests.h
@@ -235,7 +235,7 @@
    * pendingTaskCountMax + 1th task.  Verify that we unblock when a task completes */
 
   bool blockTest(int64_t timeout=100LL, size_t workerCount=2) {
-
+    (void) timeout;
     bool success = false;
 
     try {