face+tools: fix compilation with Boost 1.69.0

Refs: #4890
Change-Id: I64c2e6ac99767fbd0b8afa9669eb6097148f8628
diff --git a/tests/daemon/mgmt/face-manager-update-face.t.cpp b/tests/daemon/mgmt/face-manager-update-face.t.cpp
index 1be0647..4cd6fb6 100644
--- a/tests/daemon/mgmt/face-manager-update-face.t.cpp
+++ b/tests/daemon/mgmt/face-manager-update-face.t.cpp
@@ -74,7 +74,7 @@
     params.setFlagBit(ndn::nfd::BIT_LP_RELIABILITY_ENABLED, enableReliability);
 
     if (!boost::logic::indeterminate(enableCongestionMarking)) {
-      params.setFlagBit(ndn::nfd::BIT_CONGESTION_MARKING_ENABLED, enableCongestionMarking);
+      params.setFlagBit(ndn::nfd::BIT_CONGESTION_MARKING_ENABLED, bool(enableCongestionMarking));
     }
 
     createFace(params);