Fix :w bug.

common/content/hints.js

@@ -863,6 +863,7 @@ var Hints = Module("hints", {
                 else if (option == "label") {
                     if (elem.id) {
                         let label = (elem.ownerDocument.dactylLabels || {})[elem.id];
+                        // Urgh.
                         if (label)
                             return [label.textContent.toLowerCase(), true];
                     }

common/modules/buffer.jsm

@@ -1719,7 +1719,7 @@ var Buffer = Module("Buffer", {
 
                     dactyl.assert(args.bang || !file.exists(), _("io.exists"));
 
-                    chosenData = { file: file, uri: util.newURI(doc.location.href) };
+                    chosenData = { file: file.file, uri: util.newURI(doc.location.href) };
                 }
 
                 // if browser.download.useDownloadDir = false then the "Save As"