SteamCodec::KeyValues doesn't work with // comments

[thth]

On input of KeyValues with // comments, SteamCodec::KeyValues::load returns nil.

The issue appears to be here, where only \\ is parsed as a comment, but according to the wiki and the file I'm working with, // and / should be comments. I also haven't seen \\ being indicated as being a KeyValues comment anywhere.

[davispuh]

hmm, I actually haven't encountered any file with comments, but yeah indeed I've messed up there.
// is comment, can see it in source-sdk-2013/sp/src/tier1/utlbuffer.cpp#412 But based on that implementation single / isn't comment.