When visitor enabled, sometimes not sending to visitor when sending to all

[AndreasStgm]

The visitor module is sometimes skipped when sending to all known peers, this counts for the "Call" and the "Reset".

As shown only 4 messages are sent, even though the central module knows 5 peers.

Example of correct function:

[AndreasStgm]

For now fixed in #8 . At later date may be changed back to sending separate messages one by one.