	* evas: don't segv when manipulating line at canvas border.
	* evas: don't segv when manipulating line at canvas border.

	FIXME: When the jump code start, it break line continuity and
	make them look hugly. I have no idea how to properly fix that
	right now.


git-svn-id: 24a995eca3b83137dd7eab3408044d7832e202f7@54330 7cbeb6ba-43b4-40fd-8cce-4c39aea84d33

antognolli/Evas,antognolli/Evas,antognolli/Evas,antognolli/Evas