[gnome-commander] Fix memory leak in get_string_pixel_size

[Uwe Scholz <uwescholz src gnome org>]

commit 796b382fa2f73c3a4a7a00aaa1f809c50b52064a
Author: Eric R. Schulz <eric ers35 com>
Date:   Wed Aug 17 21:22:09 2016 -0400

    Fix memory leak in get_string_pixel_size
    
    Use g_object_ref_sink() followed by g_object_unref() to properly set
    the reference count.

 src/gnome-cmd-dir-indicator.cc |    5 ++---
 1 files changed, 2 insertions(+), 3 deletions(-)
---
diff --git a/src/gnome-cmd-dir-indicator.cc b/src/gnome-cmd-dir-indicator.cc
index 09e4ffd..e219a36 100644
--- a/src/gnome-cmd-dir-indicator.cc
+++ b/src/gnome-cmd-dir-indicator.cc
@@ -230,13 +230,12 @@ inline int get_string_pixel_size (const char *s, int len)
     gchar *ms = get_mono_text (utf8buf);
     gtk_label_set_markup (label, ms);
     g_free (ms);
-    g_object_ref (label);
+    g_object_ref_sink(G_OBJECT(label));
 
     PangoLayout *layout = gtk_label_get_layout (label);
     pango_layout_get_pixel_size (layout, &xSize, &ySize);
 
-    // we're finished with the label
-    gtk_object_sink (GTK_OBJECT (label));
+    g_object_unref(GTK_OBJECT (label));
     g_free (utf8buf);
     g_free (buf);