[gtksourceview/wip/fix-warnings] BufferOutputStream: fix comparison between signed and unsigned integer

[Sébastien Wilmet <swilmet src gnome org>]

commit fcf79895a31c957a8021fed36bf85b38f71521c7
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Sun Aug 9 16:41:41 2015 +0200

    BufferOutputStream: fix comparison between signed and unsigned integer

 gtksourceview/gtksourcebufferoutputstream.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/gtksourcebufferoutputstream.c b/gtksourceview/gtksourcebufferoutputstream.c
index a71e4e7..365ae98 100644
--- a/gtksourceview/gtksourcebufferoutputstream.c
+++ b/gtksourceview/gtksourcebufferoutputstream.c
@@ -632,7 +632,7 @@ validate_and_insert (GtkSourceBufferOutputStream *stream,
 
                        ptr = g_utf8_find_prev_char (buffer, buffer + len);
 
-                       if (ptr && *ptr == '\r' && ptr - buffer == len - 1)
+                       if (ptr && *ptr == '\r' && ptr - buffer == (glong)len - 1)
                        {
                                stream->priv->buffer = g_new (gchar, 2);
                                stream->priv->buffer[0] = '\r';