[gtk/fix-fractional-letterspacing] css: Allow fractional letterspacing

[Matthias Clasen <matthiasc src gnome org>]

commit 726c9e83d27a575c7b25ebd81f737dd149dce7be
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jul 10 15:22:18 2022 -0400

    css: Allow fractional letterspacing
    
    Something like letter-spacing: -0.5px make a lot of
    sense. But we were handling the number as integer
    somewhere, loosing the fractional part.
    
    Fixes: #5034

 gtk/gtkcssstyle.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkcssstyle.c b/gtk/gtkcssstyle.c
index f03d9b4f1a..0822e80a46 100644
--- a/gtk/gtkcssstyle.c
+++ b/gtk/gtkcssstyle.c
@@ -596,7 +596,7 @@ gtk_css_style_get_pango_attributes (GtkCssStyle *style)
   GtkTextDecorationStyle decoration_style;
   const GdkRGBA *color;
   const GdkRGBA *decoration_color;
-  int letter_spacing;
+  double letter_spacing;
 
   /* text-decoration */
   decoration_line = _gtk_css_text_decoration_line_value_get (style->font_variant->text_decoration_line);