[querySelectorAll] Fixes for empty result

src/ecmascript/spidermonkey/document.c

@@ -2101,13 +2101,6 @@ document_querySelectorAll(JSContext *ctx, unsigned int argc, JS::Value *vp)
 	try {
 		*elements = root->find(xpath);
 	} catch (xmlpp::exception) {
-		args.rval().setNull();
-		return true;
-	}
-
-	if (elements->size() == 0) {
-		args.rval().setNull();
-		return true;
 	}
 
 	JSObject *elem = getCollection(ctx, elements);

src/ecmascript/spidermonkey/element.c

@@ -3007,13 +3007,6 @@ element_querySelectorAll(JSContext *ctx, unsigned int argc, JS::Value *vp)
 	try {
 		*elements = el->find(xpath);
 	} catch (xmlpp::exception) {
-		args.rval().setNull();
-		return true;
-	}
-
-	if (elements->size() == 0) {
-		args.rval().setNull();
-		return true;
 	}
 
 	JSObject *elem = getCollection(ctx, elements);

test/ecmascript/querySelectorAll.html

@@ -8,6 +8,7 @@
 <p>Click the button to add a background color all elements with class="example".</p>
 
 <button onclick="myFunction()">Try it</button>
+<button onclick="myFunction2()">Empty list</button>
 
 <p><strong>Note:</strong> The querySelectorAll() method is not supported in Internet Explorer 8 and earlier versions.</p>
 
@@ -19,6 +20,12 @@ function myFunction() {
     alert(i + ' ' + x[i].outerHTML);
   }
 }
+
+function myFunction2() {
+  x = document.querySelectorAll(".example6");
+  alert(x.length);
+}
+
 </script>
 
 </body>