Murmur: fix Denial of Service vulnerability in msgChannelState()
Murmur: fix Denial of Service vulnerability in msgChannelState()

The vulnerability was kindly reported by the "zom.bi" (https://zom.bi) community, who also provided a patch, which is applied in this commit.

Thank you very much for your support!

Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble,Lartza/mumble