Free folk Daemon

Does anyone think this book quote is a hint towards Jon Snow being a king/one possible heir to the throne? It's in 'A Game of Thrones' in Eddard I: "Kings are a rare sight in the North." (said by Ned) Robert snorted. "More likely they were hiding under the snow. Snow, Ned!" The king put one hand on the wall to steady himself as they descended. I understand Robert and Ned are talking about the people of the North and where they are. The juxtaposition of then talking about kings and then Robert saying '...they were hiding under the snow' and then stressing the word snow a second time makes me think Martin placed one of his hints here. Any thoughts? Thanks,