[gtk] EmojiCompletion: Avoid un/signed compare warnings

[Daniel Boles <dboles src gnome org>]

commit f7ebff6aea163e172e1fa6f88ad8eeb75f796652
Author: Daniel Boles <dboles src gmail com>
Date:   Wed Jun 20 20:36:19 2018 +0100

    EmojiCompletion: Avoid un/signed compare warnings
    
    (A) Use gsize to match the result of g_variant_n_children
    (B) Use guint for n_matches, like the struct (and all other n_matches)

 gtk/gtkemojicompletion.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkemojicompletion.c b/gtk/gtkemojicompletion.c
index a1feb472f4..21738e31e7 100644
--- a/gtk/gtkemojicompletion.c
+++ b/gtk/gtkemojicompletion.c
@@ -407,7 +407,7 @@ static gboolean
 has_variations (GVariant *emoji_data)
 {
   GVariant *codes;
-  int i;
+  gsize i;
   gboolean has_variations;
 
   has_variations = FALSE;
@@ -555,8 +555,8 @@ populate_completion (GtkEmojiCompletion *completion,
                      guint                offset)
 {
   GList *children, *l;
-  int n_matches;
-  int n_added;
+  guint n_matches;
+  guint n_added;
   GVariantIter iter;
   GVariant *item;