[gnome-boxes] vm-configurator: Fix typo in debug string

[Debarshi Ray <debarshir src gnome org>]

commit 4478d5db841e083340ced7cbd3fbae6e36f19763
Author: Debarshi Ray <debarshir gnome org>
Date:   Wed Dec 14 12:31:30 2016 +0100

    vm-configurator: Fix typo in debug string
    
    This would otherwise lead to a crash during startup.
    
    Fallout from ad60629187c21b8fd9335e1aa83f5dceee12a56f
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769718

 src/vm-configurator.vala |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/vm-configurator.vala b/src/vm-configurator.vala
index 94f4341..4933398 100644
--- a/src/vm-configurator.vala
+++ b/src/vm-configurator.vala
@@ -497,12 +497,12 @@ private class Boxes.VMConfigurator {
         DomainInterface iface;
 
         if (bridge) {
-            debug ("Creating bridge network device for %", domain.get_name ());
+            debug ("Creating bridge network device for %s", domain.get_name ());
             var bridge_iface = new DomainInterfaceBridge ();
             bridge_iface.set_source ("virbr0");
             iface = bridge_iface;
         } else {
-            debug ("Creating user network device for %", domain.get_name ());
+            debug ("Creating user network device for %s", domain.get_name ());
             iface = new DomainInterfaceUser ();
         }