WorkQueue: Allow WorkQueueVal to be specified with 1 type

Signed-off-by: Samuel Just <sam.just@inktank.com>

diff --git a/src/common/WorkQueue.h b/src/common/WorkQueue.h
index ced952c49cd5aa25e60d428424a6e130865c314e..d936d77abef4a761991042982781eb1a55c9411d 100644 (file)
--- a/src/common/WorkQueue.h
+++ b/src/common/WorkQueue.h
@@ -153,7 +153,7 @@ public:
     }
 
   };
-  template<typename T, typename U>
+  template<typename T, typename U = T>
   class WorkQueueVal : public WorkQueue_ {
     Mutex _lock;
     ThreadPool *pool;