[gtk+] Fix a thinko in adjustment animation

[Matthias Clasen <matthiasc src gnome org>]

commit 169ca5ad21ef91330896dbd3845a36fa4f6de6ce
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Sep 7 22:45:08 2014 -0400

    Fix a thinko in adjustment animation
    
    The target value is only relevant if we're actually animating.
    Don't look at it otherwise.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=736178

 gtk/gtkadjustment.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkadjustment.c b/gtk/gtkadjustment.c
index 2a2f60d..10f43c1 100644
--- a/gtk/gtkadjustment.c
+++ b/gtk/gtkadjustment.c
@@ -530,7 +530,7 @@ gtk_adjustment_set_value_internal (GtkAdjustment *adjustment,
 
   if (animate && priv->duration != 0 && priv->clock != NULL)
     {
-      if (priv->target == value)
+      if (priv->tick_id && priv->target == value)
         return;
 
       priv->source = priv->value;