[gtksourceview] gutterrenderertext: avoid half-pixel boundaries

[Christian Hergert <chergert src gnome org>]

commit 1acdea2101721682deff53ccb641b619659bae6b
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 26 16:12:11 2021 -0700

    gutterrenderertext: avoid half-pixel boundaries
    
    This fixes an issue where we might get different alignments for gutter
    lines depending if first/last/cell are used.
    
    Related #227

 gtksourceview/gtksourcegutterrenderertext.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtksourceview/gtksourcegutterrenderertext.c b/gtksourceview/gtksourcegutterrenderertext.c
index eff0e402..103fe989 100644
--- a/gtksourceview/gtksourcegutterrenderertext.c
+++ b/gtksourceview/gtksourcegutterrenderertext.c
@@ -151,8 +151,8 @@ gtk_source_gutter_renderer_text_snapshot_line (GtkSourceGutterRenderer *renderer
 
        gtk_snapshot_render_layout (snapshot,
                                    gtk_widget_get_style_context (GTK_WIDGET (text)),
-                                   x,
-                                   y,
+                                   ceilf (x),
+                                   ceilf (y),
                                    layout);
 
        if (priv->is_markup)