Fix compiler warnings

Author: Al2Klimov

lib/icingadb/redisconnection.cpp

@@ -224,7 +224,7 @@ void RedisConnection::EnqueueCallback(const std::function<void(boost::asio::yiel
 	auto ctime (Utility::GetTime());
 
 	asio::post(m_Strand, [this, callback, priority, ctime]() {
-		m_Queues.Writes[priority].emplace(WriteQueueItem{nullptr, nullptr, nullptr, nullptr, callback, ctime});
+		m_Queues.Writes[priority].emplace(WriteQueueItem{nullptr, nullptr, nullptr, nullptr, callback, ctime, QueryAffects{}});
 		m_QueuedWrites.Set();
 	});
 }

tools/mkclass/class_lexer.ll

@@ -26,8 +26,8 @@ do {							\
 } while (0)
 
 struct lex_buf {
-	char *buf;
-	size_t size;
+	char *buf = NULL;
+	size_t size = 0;
 };
 
 static void lb_init(lex_buf *lb)