[gtk+] text view: Avoid clang compiler warnings

[Matthias Clasen <matthiasc src gnome org>]

commit c723eba1353f973e7ef6cb5f921cb109961cd9d8
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Mar 22 15:19:17 2015 -0400

    text view: Avoid clang compiler warnings
    
    Again, our habit to use -1 as an unset value for enum types.

 gtk/gtktextview.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtktextview.c b/gtk/gtktextview.c
index 13bade8..9895698 100644
--- a/gtk/gtktextview.c
+++ b/gtk/gtktextview.c
@@ -5992,7 +5992,7 @@ gtk_text_view_move_cursor (GtkTextView     *text_view,
       gtk_text_view_move_viewport (text_view, scroll_step, count);
       if ((old_xpos == gtk_adjustment_get_target_value (priv->hadjustment) &&
            old_ypos == gtk_adjustment_get_target_value (priv->vadjustment)) &&
-          leave_direction != -1 &&
+          leave_direction != (GtkDirectionType)-1 &&
           !gtk_widget_keynav_failed (GTK_WIDGET (text_view),
                                      leave_direction))
         {
@@ -6165,7 +6165,7 @@ gtk_text_view_move_cursor (GtkTextView     *text_view,
       if (step == GTK_MOVEMENT_DISPLAY_LINES)
         gtk_text_view_set_virtual_cursor_pos (text_view, cursor_x_pos, -1);
     }
-  else if (leave_direction != -1)
+  else if (leave_direction != (GtkDirectionType)-1)
     {
       if (!gtk_widget_keynav_failed (GTK_WIDGET (text_view),
                                      leave_direction))