Potential goroutine leak in readbuffer

[moio]

If a deadline is set, r.cond.Broadcast() is called without obtaining a lock and that opens up the posibility of a race where the broadcast could be called first, and r.cond.Wait() would miss it, potentially leading to a blocked goroutine.

remotedialer/readbuffer.go

Line 115 in eac401e

t = time.AfterFunc(r.deadline.Sub(now), func() { r.cond.Broadcast() })

This is a follow up from the following PR review discussion: #68 (comment). So far, it was not observed in Rancher user installations