Set DTLS ports correctly.

Fixes #248
On 10/23/14 1:58 PM, Martin Thomson wrote:
>
> In media/webrtc/signaling/src/jsep/JsepCodecDescription.h:
>
> > @@ -40,6 +40,17 @@ struct JsepCodecDescription {
> >    virtual bool LoadRtcpFbs(
> >        const SdpRtcpFbAttributeList::Feedback& feedback) = 0;
> >
> > +  bool GetPtAsInt(uint16_t* pt_outparam) const {
> > +    char* end;
> > +    int pt = strtol(mDefaultPt.c_str(), &end, 10);
>
> Strtoul instead?
>
> —
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> <https://github.com/unicorn-wg/gecko-dev/pull/267/files#r19307237>.
>
     Yeah, that's probably what makes sense here. I can make the change.