[reSIProcate] SdpContents::Session::Medium::findFirstMatchingCodecs() not parsing RTP-map

[Gabriel Hege]

Hi!

I am not sure if I get this correctly, but to me it would make sense if 
findFirstMatchingCodecs() checked mRtpMapDone before accessing mCodecs 
and if needed call codecs() first to make sure it actually had a list to 
match against.

In my program I tried to use this function without first calling 
codecs() and was wondering why it would not return any matches...

regards,
  gabriel