fix($compile): compilation should not recurse into empty nodes

if a node doesn't have children then don't try to compile these non-existent children

src/ng/compile.js

@@ -380,7 +380,7 @@ function $CompileProvider($provide) {
            ? applyDirectivesToNode(directives, nodeList[i], attrs, transcludeFn, $rootElement)
            : null;
 
-       childLinkFn = (nodeLinkFn && nodeLinkFn.terminal)
+       childLinkFn = (nodeLinkFn && nodeLinkFn.terminal || !nodeList[i].childNodes.length)
            ? null
            : compileNodes(nodeList[i].childNodes,
                 nodeLinkFn ? nodeLinkFn.transclude : transcludeFn);