auto declaration & compiler warning "no function return"

[akcom]

private void onRead()
{
	...
	auto InternetHost ih = new InternetHost();
	if ( ih.getHostByAddr( ia.addr() ) )
	{
		//remember to delete this!!
		hostName = ih.name.dup;
	}
	else
	{
		hostName = "unknown";
	}
	...
	return true;
}

compiler gives the following: "warning - peer.d(342): function 
akp2p.peer.Peer.onRead no return at end of function"

but when I remove the "auto" from the ih declaration, everything 
compiles as expected