[libdazzle] dock-bin: don't stomp on stashed pinned state

[Christian Hergert <chergert src gnome org>]

commit ab8738f5bac0b114a237ffa5b9a93be7084791a5
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jul 5 06:28:20 2017 -0700

    dock-bin: don't stomp on stashed pinned state
    
    If we are animating, we don't want to stomp over our previous
    stashing.

 src/panel/dzl-dock-bin.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
---
diff --git a/src/panel/dzl-dock-bin.c b/src/panel/dzl-dock-bin.c
index 619e5e7..c30719f 100644
--- a/src/panel/dzl-dock-bin.c
+++ b/src/panel/dzl-dock-bin.c
@@ -271,7 +271,12 @@ set_visible (DzlDockBin          *self,
 
       if (visible != dzl_dock_revealer_get_reveal_child (DZL_DOCK_REVEALER (widget)))
         {
-          child->pre_anim_pinned = child->pinned;
+          /* Only stash state if there is not an animation in progress.
+           * Otherwise we stomp on our previous state.
+           */
+          if (!dzl_dock_revealer_is_animating (DZL_DOCK_REVEALER (widget)))
+            child->pre_anim_pinned = child->pinned;
+
           child->pinned = FALSE;
 
           dzl_dock_revealer_set_reveal_child (DZL_DOCK_REVEALER (widget), visible);