[gtk+] label: Properly calculate half the height

[Timm Bäder <baedert src gnome org>]

commit c371a86f545478a4e46867afd0a9c6cf0ffe963d
Author: Timm Bäder <mail baedert org>
Date:   Mon Mar 20 17:20:12 2017 +0100

    label: Properly calculate half the height
    
    Since we compare it to a double anyway, might as well divide by 2.0.

 gtk/gtklabel.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtklabel.c b/gtk/gtklabel.c
index 268f9c8..54676ec 100644
--- a/gtk/gtklabel.c
+++ b/gtk/gtklabel.c
@@ -3406,7 +3406,7 @@ gtk_label_update_layout_width (GtkLabel *label)
 
               x0 = width / 2;
               y0 = dx ? x0 * dy / dx : G_MAXDOUBLE;
-              vertical = fabs (y0) > height / 2;
+              vertical = fabs (y0) > height / 2.0;
 
               if (vertical)
                 {