Fix to remove extraneous clear() from Tile.moveTo (Closes #1017)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@4502 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Tile.js

@@ -175,7 +175,7 @@ OpenLayers.Tile = OpenLayers.Class({
             redraw = true;
         }
 
-        this.clear();
+        this.drawn = false;
         this.bounds = bounds.clone();
         this.position = position.clone();
         if (redraw) {
@@ -186,10 +186,10 @@ OpenLayers.Tile = OpenLayers.Class({
     /** 
      * Method: clear
      * Clear the tile of any bounds/position-related data so that it can 
-     *     be reused in a new location.
+     *     be reused in a new location. To be implemented by subclasses.
      */
     clear: function() {
-        this.drawn = false;
+        // to be implemented by subclasses
     },
     
     /**   

lib/OpenLayers/Tile/Image.js

@@ -133,7 +133,6 @@ OpenLayers.Tile.Image = OpenLayers.Class(OpenLayers.Tile, {
      *   be reused in a new location.
      */
     clear: function() {
-        OpenLayers.Tile.prototype.clear.apply(this, arguments);
         if(this.imgDiv) {
             this.imgDiv.style.display = "none";
         }

lib/OpenLayers/Tile/WFS.js

@@ -65,7 +65,6 @@ OpenLayers.Tile.WFS = OpenLayers.Class(OpenLayers.Tile, {
      *   be reused in a new location.
      */
     clear: function() {
-        OpenLayers.Tile.prototype.clear.apply(this, arguments);
         this.destroyAllFeatures();
     },