patch 8.1.0435: cursorline highlight not removed in some situation

Problem:    Cursorline highlight not removed in some situation. (Vitaly
            Yashin)
Solution:   Reset last_cursorline when resetting 'cursorline'. (Christian
            Brabandt, closes #3481)
diff --git a/src/proto/move.pro b/src/proto/move.pro
index 3bc3fd9..f66e9cd 100644
--- a/src/proto/move.pro
+++ b/src/proto/move.pro
@@ -1,4 +1,5 @@
 /* move.c */
+void reset_cursorline(void);
 void update_topline_redraw(void);
 void update_topline(void);
 void update_curswant(void);