merge vendor js

Signed-off-by: Robin Appelman <robin@icewind.nl>

core/vendor/core.js

@@ -5551,6 +5551,9 @@ dav.Client.prototype = {
             '  <d:prop>\n';
 
         for(var ii in properties) {
+            if (!properties.hasOwnProperty(ii)) {
+                continue;
+            }
 
             var property = this.parseClarkNotation(properties[ii]);
             if (this.xmlNamespaces[property.namespace]) {
@@ -5596,6 +5599,10 @@ dav.Client.prototype = {
             '   <d:prop>\n';
 
         for(var ii in properties) {
+            if (!properties.hasOwnProperty(ii)) {
+                continue;
+            }
+
             var property = this.parseClarkNotation(ii);
             var propName;
             var propValue = properties[ii];