[gtksourceview] Fixed passing negative number as uint to selecting providers

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 94b54b69fb22385dccfa945dd67d2ee3aa0a0189
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Sun Oct 11 18:03:52 2009 +0200

    Fixed passing negative number as uint to selecting providers
    
    This fixes bug #597458

 gtksourceview/gtksourcecompletion.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtksourceview/gtksourcecompletion.c b/gtksourceview/gtksourcecompletion.c
index b2b5a76..c2bce77 100644
--- a/gtksourceview/gtksourcecompletion.c
+++ b/gtksourceview/gtksourcecompletion.c
@@ -1280,7 +1280,7 @@ gtk_source_completion_move_page (GtkSourceCompletion *completion,
 		}
 		else
 		{
-			select_previous_provider (completion, num);
+			select_previous_provider (completion, -1 * num);
 		}
 	}
 }