[#3366] fix memory leak in unittests

diff --git a/src/lib/dhcpsrv/tests/cfg_iface_unittest.cc b/src/lib/dhcpsrv/tests/cfg_iface_unittest.cc
index 25f02bc3041afc7504841f13a470e7113c13c008..4c07bb1394767c452dc1f0437afd0fd8e6bf92f8 100644 (file)
--- a/src/lib/dhcpsrv/tests/cfg_iface_unittest.cc
+++ b/src/lib/dhcpsrv/tests/cfg_iface_unittest.cc
@@ -99,6 +99,9 @@ CfgIfaceTest::TearDown() {
 
     // Reset global handlers
     CfgIface::open_sockets_failed_callback_ = 0;
+
+    // Handle all remaining callbacks.
+    io_service_->stopAndPoll();
 }
 
 bool