go pointer analysis bug

Steps to reproduce:

1. Install dependencies.

   In the directory where the repository is cloned, run:

   mkdir gopath
   env GOPATH=$PWD/gopath GO111MODULE=off go get github.com/docker/docker \
       golang.org/x/tools/go/{pointer,packages}

2. Run the program that calls the pointer analysis.

   env GOPATH=$PWD/gopath GO111MODULE=off go run main.go