Added check for description mid

src/track.cpp

@@ -33,6 +33,9 @@ string Track::mid() const { return mMediaDescription.mid(); }
 Description::Media Track::description() const { return mMediaDescription; }
 
 void Track::setDescription(Description::Media description) {
+	if(description.mid() != mMediaDescription.mid())
+		throw std::logic_error("Media description mid does not match track mid");
+
 	mMediaDescription = std::move(description);
 }