Fix build on RHEL5 and SLES10

GCC 4.1.2 on RHEL5 and SLES10 don't like not having a newline at the
end of a source file, and error out if it's missing.
Signed-off-by: AJ Lewis <aj.lewis@quantum.com>

tests/test_monitor.cpp

@@ -122,4 +122,5 @@ int main (int argc, char *argv [])
     assert (events & ZMQ_EVENT_CLOSED);
 
     return 0 ;
-}
\ No newline at end of file
+}
+