fix channel name send by ddLCMSubscriber signal
fix channel name send by ddLCMSubscriber signal

send the actual channel, not mChannel.  mChannel might be a regex, while
the actual channel is the real channel name matched by the regex.

openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro