Ignore disconnection while there are still data in rx buffer
Ignore disconnection while there are still data in rx buffer

Signed-off-by: Martin Sustrik <4dd6061be1198639e8b05ce4fd5ead7a0dcaa0f4@250bpm.com>

lsm/libmill,sustrik/libmill,dailypips/libmill,reqshark/libmill,dailypips/libmill,nirs/libmill,linearregression/libmill,ebfe/libmill,linearregression/libmill,reqshark/libmill,8l/libmill,lsm/libmill,jimjag/mill,8l/libmill,jimjag/mill,lsm/libmill,dailypips/libmill,sustrik/libmill,sustrik/libmill,linearregression/libmill,ebfe/libmill,jimjag/mill,nirs/libmill,ebfe/libmill,reqshark/libmill