[2995] Dhcpv4Srv tests are now passing again.

src/bin/dhcp4/tests/dhcp4_srv_unittest.cc

@@ -26,6 +26,7 @@
 #include <dhcp/pkt_filter_inet.h>
 #include <dhcp4/dhcp4_srv.h>
 #include <dhcp4/dhcp4_log.h>
+#include <hooks/server_hooks.h>
 #include <dhcpsrv/cfgmgr.h>
 #include <dhcpsrv/lease_mgr.h>
 #include <dhcpsrv/lease_mgr_factory.h>
@@ -155,6 +156,14 @@ public:
         unlink(SRVID_FILE);
     }
 
+    virtual ~Dhcpv4SrvTest() {
+
+        // Remove all registered hook points (it must be done even for tests that
+        // do not use hooks as the base class - Dhcpv4Srv calls allocation engine
+        // that registers hooks)
+        isc::hooks::ServerHooks::getServerHooks().reset();
+    }
+
     /// @brief Add 'Parameter Request List' option to the packet.
     ///
     /// This function PRL option comprising the following option codes:

src/bin/dhcp6/tests/dhcp6_srv_unittest.cc

@@ -111,7 +111,7 @@ public:
 
     virtual ~NakedDhcpv6Srv() {
         // Remove all registered hook points (it must be done even for tests that
-        // do not use hooks as the base class - Dhcpv6Srv registers hooks
+        // do not use hooks as the base class - Dhcpv6Srv registers hooks)
         ServerHooks::getServerHooks().reset();
 
         // Close the lease database