fix non-working logging at first connection to PLC after Beremiz launch
At the same time this helps to avoid exception described in 1484:d5efbb20927e.
int CheckRetainBuffer(void){ return 1;}void ValidateRetainBuffer(void){}void InValidateRetainBuffer(void){}void Retain(unsigned int offset, unsigned int count, void *p){}void Remind(unsigned int offset, unsigned int count, void *p){}