[gnome-panel] panel-applet-frame: fix build warning

[Alberts Muktupāvels <muktupavels src gnome org>]

commit fc8d131319edc0481eb495dee29aeea8988db91c
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Fri Oct 7 00:11:54 2016 +0300

    panel-applet-frame: fix build warning

 gnome-panel/panel-applet-frame.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gnome-panel/panel-applet-frame.c b/gnome-panel/panel-applet-frame.c
index 46c5dda..66f086e 100644
--- a/gnome-panel/panel-applet-frame.c
+++ b/gnome-panel/panel-applet-frame.c
@@ -576,7 +576,7 @@ _panel_applet_frame_update_size_hints (PanelAppletFrame *frame,
 {
        if (frame->priv->has_handle) {
                gint extra_size = HANDLE_SIZE + 1;
-               gint i;
+               guint i;
 
                for (i = 0; i < n_elements; i++)
                        size_hints[i] += extra_size;