[gtk+/extended-layout-jhs: 12/64] Prevent undefined behaviour when gtk_widget_translate_coordinates fails.

[Johannes Schmid <jhs src gnome org>]

commit 203792797b55d1288968ee5aac2461a66bbe8261
Author: Mathias Hasselmann <mathias hasselmann gmx de>
Date:   Wed Jun 27 23:43:47 2007 +0000

    Prevent undefined behaviour when gtk_widget_translate_coordinates fails.
    
    2007-06-28  Mathias Hasselmann  <mathias hasselmann gmx de>
    
    	* gtk/gtkbin.c: Prevent undefined behaviour when
    	gtk_widget_translate_coordinates fails.
    
    svn path=/branches/extended-layout/; revision=18266

 ChangeLog.gtk-extended-layout |    5 +++++
 gtk/gtkbin.c                  |    7 +++----
 2 files changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/ChangeLog.gtk-extended-layout b/ChangeLog.gtk-extended-layout
index 18148f8..a098d7f 100644
--- a/ChangeLog.gtk-extended-layout
+++ b/ChangeLog.gtk-extended-layout
@@ -1,3 +1,8 @@
+2007-06-28  Mathias Hasselmann  <mathias hasselmann gmx de>
+
+	* gtk/gtkbin.c: Prevent undefined behaviour when
+	gtk_widget_translate_coordinates fails.
+	
 2007-06-20  Mathias Hasselmann  <mathias hasselmann gmx de>
 
 	* tests/testextendedlayout.c: Provide checkboxes 
diff --git a/gtk/gtkbin.c b/gtk/gtkbin.c
index d4b6e77..4ccc83f 100644
--- a/gtk/gtkbin.c
+++ b/gtk/gtkbin.c
@@ -215,11 +215,10 @@ gtk_bin_extended_layout_get_baselines (GtkExtendedLayout  *layout,
   layout = GTK_EXTENDED_LAYOUT (bin->child);
   num_lines = gtk_extended_layout_get_baselines (layout, baselines);
 
-  if (baselines)
-    {
+  if (baselines &&
       gtk_widget_translate_coordinates (bin->child, GTK_WIDGET (bin),
-                                        0, 0, NULL, &dy);
-
+                                        0, 0, NULL, &dy))
+    {
       baseptr = *baselines;
       baseend = baseptr + num_lines;