go get is broken since cdd605f5e2f5158c8d3f8f752cba0a53b0aac4ec

[tamird]

$ go get -u github.com/google/netstack/...
# github.com/google/netstack/tcpip/transport/ping
../go/src/github.com/google/netstack/tcpip/transport/ping/ping_packet_list.go:16:48: undefined: pingPacket
../go/src/github.com/google/netstack/tcpip/transport/ping/ping_packet_list.go:30:8: undefined: pingPacket
../go/src/github.com/google/netstack/tcpip/transport/ping/ping_packet_list.go:31:8: undefined: pingPacket
# github.com/google/netstack/tcpip/transport/icmp
../go/src/github.com/google/netstack/tcpip/transport/icmp/endpoint.go:31:2: undefined: icmpPacketEntry

This was broken in cdd605f (google/gvisor@b75aa51) which changed the names of generated files and the type definitions they contain.

@kevinGC @iangudger @amscanne

[tamird]

Fixed since 6369163.