[gimp/metadata-browser] app: initialize also GimpRGB's alpha component

[Roman Joost <romanofski src gnome org>]

commit 675546f671cbac8f19f44fa90f4c4c6ab44cc4d5
Author: Massimo Valentini <mvalentini src gnome org>
Date:   Tue Mar 13 20:42:59 2012 +0100

    app: initialize also GimpRGB's alpha component
    
    Conditional jump or move depends on uninitialised value(s)
    ==29000==    at 0x4C33CBC: gimp_color_area_set_color (gimp/libgimpwidgets/gimpcolorarea.c:425)
    ==29000==    by 0x4C3505B: gimp_color_button_set_color (gimp/libgimpwidgets/gimpcolorbutton.c:642)
    ==29000==    by 0x5DA5BE: gimp_text_style_editor_set_color (gimp/app/widgets/gimptextstyleeditor.c:700)
    ==29000==    by 0x5DB0D4: gimp_text_style_editor_update_idle (gimp/app/widgets/gimptextstyleeditor.c:1090)
    ==29000==    by 0x57E9E95: gdk_threads_dispatch (gtk-2-24/gdk/gdk.c:512)
    
    Steps to reproduce:
    
    <Ctrl>N <Enter> T
    click on canvas
    type something
    
    select the text entered and change its color using
    the color button from the text style editor

 app/widgets/gimptextstyleeditor.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/app/widgets/gimptextstyleeditor.c b/app/widgets/gimptextstyleeditor.c
index f99c99a..1f8da6e 100644
--- a/app/widgets/gimptextstyleeditor.c
+++ b/app/widgets/gimptextstyleeditor.c
@@ -693,10 +693,10 @@ gimp_text_style_editor_set_color (GimpTextStyleEditor *editor,
 {
   GimpRGB color;
 
+  gimp_rgba_set (&color, 0.0, 0.0, 0.0, 1.0);
+
   if (color_tag)
     gimp_text_tag_get_color (color_tag, &color);
-  else
-    gimp_rgb_set (&color, 0.0, 0.0, 0.0);
 
   g_signal_handlers_block_by_func (editor->color_button,
                                    gimp_text_style_editor_color_changed,