eion/purple-hangouts

Fix some easy leaks
draft
2018-02-18, dx
c87cdb027d36
Fix some easy leaks

There are some hard ones in hangouts_pblite.c. Apparently back in sep 2016 I
tried to fix those and got invalid reads elsewhere and left the valgrind output
as a warning there.
// proto2 is required because we need to be able to serialize default values:
syntax = "proto2";
message GmailNotification {
optional string thread_id = 3;
//optional string previous_id = 4;
optional string id = 5;
repeated string labels = 6;
optional string subject = 7;
optional string snippet = 8;
optional string sender_name = 9;
optional string sender_email = 10;
//repeated unknown = 11;
}