[d-feet] Show values that have a logical False representation.

[Benjamin Berg <bberg src gnome org>]

commit cf4d19881505c130e4a96e3126a534f9cd384380
Author: Benjamin Berg <bberg redhat com>
Date:   Tue May 23 18:55:24 2017 +0200

    Show values that have a logical False representation.
    
    Correctly test whether a value has been retrieved (not None) instead of
    testing whether the value is logically True to decide on showing it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783006

 src/dfeet/introspection_helper.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/dfeet/introspection_helper.py b/src/dfeet/introspection_helper.py
index 348b772..68e3cd6 100644
--- a/src/dfeet/introspection_helper.py
+++ b/src/dfeet/introspection_helper.py
@@ -86,7 +86,7 @@ class DBusProperty(DBusInterface):
         s = "%s %s <small>(%s)</small>" % (
             args_signature_markup(sig),
             args_name_markup(self.property_info.name), " / ".join(readwrite))
-        if self.value:
+        if self.value is not None:
             s += " = %s" % (self.value,)
         return s