From 7a31cd4fe7ac03e115ec7e85a265436547a78736 Mon Sep 17 00:00:00 2001
From: "Alexander A. Klimov" <alexander.klimov@icinga.com>
Date: Wed, 8 Aug 2018 12:11:37 +0200
Subject: [PATCH] IDO/MySQL: avoid empty queries

---
 lib/db_ido_mysql/idomysqlconnection.cpp | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/db_ido_mysql/idomysqlconnection.cpp b/lib/db_ido_mysql/idomysqlconnection.cpp
index 9c8fd7b41..051206231 100644
--- a/lib/db_ido_mysql/idomysqlconnection.cpp
+++ b/lib/db_ido_mysql/idomysqlconnection.cpp
@@ -519,11 +519,12 @@ void IdoMysqlConnection::FinishAsyncQueries()
 
 			size_t size_query = aq.Query.GetLength() + 1;
 
-			if (num_bytes + size_query > m_MaxPacketSize - 512)
-				break;
+			if (count > 0) {
+				if (num_bytes + size_query > m_MaxPacketSize - 512)
+					break;
 
-			if (count > 0)
 				querybuf << ";";
+			}
 
 			IncreaseQueryCount();
 			count++;