[folks] By default, do debug output iff at least one debug domain is enabled

[Simon McVittie <smcv src gnome org>]

commit 5226ce9395749259cdc3bab8a94c0244ae3315ac
Author: Simon McVittie <simon mcvittie collabora co uk>
Date:   Tue Apr 2 17:53:36 2013 +0100

    By default, do debug output iff at least one debug domain is enabled
    
    Previously, debug output (and expensive checks that are enabled alongside
    debug output) was always enabled unless explicitly disabled, but
    Philip noted that this was not intentional.
    
    Bug: https://bugzilla.gnome.org/show_bug.cgi?id=687161
    Signed-off-by: Simon McVittie <simon mcvittie collabora co uk>
    Reviewed-by: Philip Withnall <philip tecnocode co uk>

 folks/debug.vala |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/folks/debug.vala b/folks/debug.vala
index 11c5f9e..fb30f81 100644
--- a/folks/debug.vala
+++ b/folks/debug.vala
@@ -89,7 +89,7 @@ public class Folks.Debug : Object
         }
     }
 
-  private bool _debug_output_enabled = true;
+  private bool _debug_output_enabled = false;
 
   /**
    * Whether debug output is enabled. This is orthogonal to the set of enabled
@@ -254,6 +254,7 @@ public class Folks.Debug : Object
             }
         }
 
+      retval.debug_output_enabled = (retval._all || !retval._domains.is_empty);
       retval.colour_enabled = colour_enabled;
 
       return retval;