[gtksourceview/wip/fix-warnings] buffer: fix warning

[Sébastien Wilmet <swilmet src gnome org>]

commit 3e88d469ccf7c6ee725366c03a3d9d66e2969aa9
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Aug 9 17:03:57 2015 +0200

    buffer: fix warning

 gtksourceview/gtksourcebuffer.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/gtksourcebuffer.c b/gtksourceview/gtksourcebuffer.c
index c0ffa45..c6c7bf0 100644
--- a/gtksourceview/gtksourcebuffer.c
+++ b/gtksourceview/gtksourcebuffer.c
@@ -1155,7 +1155,7 @@ static gint
 get_context_class_mask (GtkSourceBuffer *buffer,
                         GtkTextIter     *iter)
 {
-       gint i;
+       guint i;
        gint ret = 0;
 
        for (i = 0; i < sizeof (cclass_mask_definitions) / sizeof (gchar *); ++i)