tree a7b9c8389b1083a464ab5c561a2fbb490fe87f15
parent d901677135a1e9fc5a6f23f7be8a3fb9332baba6
author Damien Neil <dneil@google.com> 1536184138 -0700
committer Damien Neil <dneil@google.com> 1536249125 +0000

reflect/prototype: default proto file syntax is "proto2"

protoc leaves FileDescriptorProto.Syntax unset when the syntax is
"proto2".

Change-Id: Id1370145fc9c5c67344f5a998d118fd0f9f65f24
Reviewed-on: https://go-review.googlesource.com/133636
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>