Fixes warning when compiling with MSVC on Win64

Signed-off-by: Martin Sustrik <sustrik@250bpm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/lb.cpp b/src/lb.cpp
index e81df3a..8eb9157 100644
--- a/src/lb.cpp
+++ b/src/lb.cpp
@@ -58,7 +58,7 @@ void zmq::lb_t::terminate ()
     zmq_assert (!terminating);
     terminating = true;
 
-    sink->register_term_acks (pipes.size ());
+    sink->register_term_acks ((int) pipes.size ());
     for (pipes_t::size_type i = 0; i != pipes.size (); i++)
         pipes [i]->terminate ();
 }