Deduplicate DbConnection#Disconnect() in #Pause()

refs #8727

lib/db_ido/dbconnection.cpp

@@ -112,6 +112,8 @@ void DbConnection::Pause()
 
 	NewTransaction();
 
+	m_QueryQueue.Enqueue([this]() { Disconnect(); }, PriorityLow);
+
 	/* Work on remaining tasks but never delete the threads, for HA resuming later. */
 	m_QueryQueue.Join();
 

lib/db_ido_mysql/idomysqlconnection.cpp

@@ -105,8 +105,6 @@ void IdoMysqlConnection::Pause()
 		<< "Rescheduling disconnect task.";
 #endif /* I2_DEBUG */
 
-	m_QueryQueue.Enqueue([this]() { Disconnect(); }, PriorityLow);
-
 	Log(LogInformation, "IdoMysqlConnection")
 		<< "'" << GetName() << "' paused.";
 

lib/db_ido_pgsql/idopgsqlconnection.cpp

@@ -104,8 +104,6 @@ void IdoPgsqlConnection::Pause()
 
 	m_ReconnectTimer.reset();
 
-	m_QueryQueue.Enqueue([this]() { Disconnect(); }, PriorityLow);
-
 	Log(LogInformation, "IdoPgsqlConnection")
 		<< "'" << GetName() << "' paused.";
 }