[gtk+] Remove a self-assignment

[Matthias Clasen <matthiasc src gnome org>]

commit 62dce64a48e5483eca82c1f52690b1774e57d249
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Aug 9 23:38:40 2015 +0200

    Remove a self-assignment
    
    clang doesn't like those.

 gtk/gtkbbox.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkbbox.c b/gtk/gtkbbox.c
index 68ec484..000ba13 100644
--- a/gtk/gtkbbox.c
+++ b/gtk/gtkbbox.c
@@ -884,7 +884,7 @@ gtk_button_box_size_allocate (GtkWidget     *widget,
       switch (gtk_box_get_baseline_position (GTK_BOX (widget)))
        {
        case GTK_BASELINE_POSITION_TOP:
-         baseline = baseline;
+          /* keep baseline as is */
          break;
        case GTK_BASELINE_POSITION_CENTER:
          baseline = baseline + (allocation->height - baseline_height) / 2;