[master] Fixed incorrect code in LibraryManagerTest::NullManager introduced by #5201

src/lib/hooks/tests/library_manager_unittest.cc

@@ -131,7 +131,8 @@ public:
 // Check that LibraryManager constructor requires a not null manager
 
 TEST_F(LibraryManagerTest, NullManager) {
-    EXPECT_THROW(PublicLibraryManager(std::string("foo"), 0, 0),
+    boost::shared_ptr<CalloutManager> null_manager;
+    EXPECT_THROW(PublicLibraryManager(std::string("foo"), 0, null_manager),
                  NoCalloutManager);
 }