Can't build lib/pq

[muhlemmer]

In my CI I noticed build failures on lib/pq. Running go get -u github.com/lib/pq locally reproduces the error.

# github.com/lib/pq
go/src/github.com/lib/pq/conn_go18.go:213:21: not enough arguments in call to st.cn.cancel
        have ()
        want (context.Context)

pq/conn_go18.go

Line 213 in a2bfbdf

return st.cn.cancel()

It was introduced in today merge of #768

[muhlemmer]

#917 raced me to it, closing