[gtk/wip/chergert/fix-toggle-caret-visibility] textview: fix assertion when toggling caret visibility

[Christian Hergert <chergert src gnome org>]

commit 55dd737ea0c2be2a23469680ce10a6026f81f7b2
Author: Christian Hergert <chergert redhat com>
Date:   Tue Apr 21 13:39:50 2020 -0700

    textview: fix assertion when toggling caret visibility
    
    When toggling caret visibility (with F7) we would hit an assertion if the
    cursor is currently blinking. This adjusts things to ensure that we should
    be showing the carent when scheduling our blink timeouts.
    
    Fixes #2647

 gtk/gtktextview.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 1835c4fd14..8426cbb4ac 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -6048,7 +6048,7 @@ gtk_text_view_check_cursor_blink (GtkTextView *text_view)
 {
   GtkTextViewPrivate *priv = text_view->priv;
 
-  if (cursor_blinks (text_view))
+  if (cursor_blinks (text_view) && cursor_visible (text_view))
     {
       if (!priv->blink_tick)
         add_blink_timeout (text_view, FALSE);