[gtk+] Don't return FALSE from a non-boolean function

[Matthias Clasen <matthiasc src gnome org>]

commit bdfd0d46380cc086a9e81d3de985a20e2f1c7a82
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Mar 26 23:30:10 2013 -0400

    Don't return FALSE from a non-boolean function
    
    https://bugzilla.gnome.org/show_bug.cgi?id=696608

 gtk/gtkcssstylepropertyimpl.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkcssstylepropertyimpl.c b/gtk/gtkcssstylepropertyimpl.c
index 26726d7..ea3cb36 100644
--- a/gtk/gtkcssstylepropertyimpl.c
+++ b/gtk/gtkcssstylepropertyimpl.c
@@ -583,7 +583,7 @@ css_image_value_parse (GtkCssStyleProperty *property,
     {
       image = _gtk_css_image_new_parse (parser);
       if (image == NULL)
-        return FALSE;
+        return NULL;
     }
 
   return _gtk_css_image_value_new (image);