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)

Author: brammool

src/move.c

@@ -125,6 +125,12 @@ comp_botline(win_T *wp)
 
 #ifdef FEAT_SYN_HL
 static linenr_T	last_cursorline = 0;
+
+    void
+reset_cursorline(void)
+{
+    last_cursorline = 0;
+}
 #endif
 
 /*

src/option.c

@@ -8306,6 +8306,11 @@ set_bool_option(
 	p_lrm = !p_lnr;
 #endif
 
+#ifdef FEAT_SYN_HL
+    else if ((int *)varp == &curwin->w_p_cul && !value && old_value)
+	reset_cursorline();
+#endif
+
 #ifdef FEAT_PERSISTENT_UNDO
     /* 'undofile' */
     else if ((int *)varp == &curbuf->b_p_udf || (int *)varp == &p_udf)

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);

src/version.c

@@ -794,6 +794,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    435,
 /**/
     434,
 /**/