[gtk+] gtkprintunixdialog: Fix a potential g_object_unref(NULL) call

[Philip Withnall <pwithnall src gnome org>]

commit ac4da770e10fa293a7c99bb3c4bcb8490f431e7f
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Tue Nov 26 15:08:08 2013 +0000

    gtkprintunixdialog: Fix a potential g_object_unref(NULL) call
    
    The code above checks whether (printer == NULL), so we’d better do so
    here as well.
    
    Found by scan-build.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=712760

 gtk/gtkprintunixdialog.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkprintunixdialog.c b/gtk/gtkprintunixdialog.c
index 85fca0d..cca1dc5 100644
--- a/gtk/gtkprintunixdialog.c
+++ b/gtk/gtkprintunixdialog.c
@@ -961,7 +961,7 @@ void set_cell_sensitivity_func (GtkTreeViewColumn *tree_column,
   else
     g_object_set (cell, "sensitive", TRUE, NULL);
 
-  g_object_unref (printer);
+  g_clear_object (&printer);
 }
 
 static void