fix for correct build

src/colnod/databasemanager.cpp

@@ -186,7 +186,7 @@ void DatabaseManager::createTables()
 }
 
 // return last_sync time
-uint64_t DatabaseManager::getLastSync()
+quint64 DatabaseManager::getLastSync()
 {
     query.exec("SELECT last_sync FROM config");
     query.next();