The loop condition used `y <= s->height` instead of `y < s->height`,
causing vc_clear_xy() to be called with y == s->height. This clears
a row in the scrollback buffer beyond the visible screen.

Signed-off-by: Marc-André Lureau <[email protected]>
---
 ui/console-vc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ui/console-vc.c b/ui/console-vc.c
index f22806fed79..8dee1f9bd01 100644
--- a/ui/console-vc.c
+++ b/ui/console-vc.c
@@ -899,7 +899,7 @@ static void vc_putchar(VCChardev *vc, int ch)
                     break;
                 case 2:
                     /* clear entire screen */
-                    for (y = 0; y <= s->height; y++) {
+                    for (y = 0; y < s->height; y++) {
                         for (x = 0; x < s->width; x++) {
                             vc_clear_xy(vc, x, y);
                         }

-- 
2.53.0


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