[gtk/css-line-height2: 4/7] gtk-demo: Set line height from markup

[Matthias Clasen <matthiasc src gnome org>]

commit 21fe4dddb17b2a1ba2de1457bede151245307783
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Aug 22 13:48:26 2021 -0400

    gtk-demo: Set line height from markup
    
    Keep the import-markup code in sync with GtkTextBuffer.

 demos/gtk-demo/fontify.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/demos/gtk-demo/fontify.c b/demos/gtk-demo/fontify.c
index 8eb3c148f4..2ceeab9416 100644
--- a/demos/gtk-demo/fontify.c
+++ b/demos/gtk-demo/fontify.c
@@ -257,6 +257,9 @@ insert_tags_for_attributes (GtkTextBuffer     *buffer,
 
 #if PANGO_VERSION_CHECK(1,49,0)
         case PANGO_ATTR_LINE_HEIGHT:
+          FLOAT_ATTR (line_height);
+          break;
+
         case PANGO_ATTR_ABSOLUTE_LINE_HEIGHT:
           break;
 #endif