Clear the feature stored by the DragFeature control when the user moves the mouse out or when dragging completes (closes #942).

git-svn-id: http://svn.openlayers.org/trunk/openlayers@4111 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/DragFeature.js

@@ -237,6 +237,7 @@ OpenLayers.Control.DragFeature = OpenLayers.Class(OpenLayers.Control, {
      */
     doneDragging: function(pixel) {
         this.onComplete(this.feature, pixel);
+        this.feature = null;
     },
 
     /**
@@ -252,6 +253,7 @@ OpenLayers.Control.DragFeature = OpenLayers.Class(OpenLayers.Control, {
             this.dragHandler.deactivate();
             // TBD replace with CSS classes
             this.map.div.style.cursor = "default";
+            this.feature = null;
         } else {
             if(this.feature.id == feature.id) {
                 this.over = false;