#875 - protect global property variable - with regression test

git-svn-id: http://svn.openlayers.org/trunk/openlayers@3837 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Util.js

@@ -49,7 +49,7 @@ if ($ == null) {
  */
 OpenLayers.Util.extend = function(destination, source) {
     if(destination && source) {
-        for(property in source) {
+        for(var property in source) {
             destination[property] = source[property];
         }
         /**

tests/test_Util.html

@@ -580,7 +580,7 @@
     }
 
     function tests_Util_extend(t) {
-        t.plan(4);
+        t.plan(5);
         var source = {
             num: Math.random(),
             obj: {
@@ -602,6 +602,7 @@
              "extend properly sets function property on destination");
         t.eq(destination.toString(), "source",
              "extend properly sets custom toString method");
+        t.eq(window.property, undefined, "Property variable not clobbered.");
     }
     
     function test_XX_Util_Try(t) {