making drawing handler work on touch devices. p=sbrunner, r=me (closes #3072)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@11563 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Handler/Polygon.js

@@ -148,7 +148,18 @@ OpenLayers.Handler.Polygon = OpenLayers.Class(OpenLayers.Handler.Path, {
             point.y = last.y;
         }
     },
-    
+
+    /**
+     * Method: finishTouchGeometry
+     * Finish the geometry and send it back to the control.
+     */
+    finishTouchGeometry: function() {
+        var index = this.line.geometry.components.length - 2;
+        this.line.geometry.removeComponent(this.line.geometry.components[index]);
+        this.removePoint();
+        this.finalize();
+    },
+
     /**
      * Method: finalizeInteriorRing
      * Enforces that new ring has some area and doesn't contain vertices of any