Bug 319022 - extensionlist shows XPI as xxxxxxxx.xpi without any usefulness. r=mconnor

toolkit/mozapps/extensions/content/extensions.js

@@ -405,7 +405,6 @@ XPInstallDownloadManager.prototype = {
         // not a download operation on an existing item.
         var type = gWindowState == "extensions" ? nsIUpdateItem.TYPE_EXTENSION
                                                 : nsIUpdateItem.TYPE_THEME;
-        gExtensionManager.removeDownload(aAddon.xpiURL);
         break;
       case nsIXPIProgressDialog.DIALOG_CLOSE:
         break;

toolkit/mozapps/extensions/src/nsExtensionManager.js.in

@@ -4824,6 +4824,7 @@ ExtensionManager.prototype = {
     switch (state) {
     case nsIXPIProgressDialog.INSTALL_DONE:
       --this._downloadCount;
+      this.removeDownload(addon.xpiURL);
       break;
     case nsIXPIProgressDialog.DIALOG_CLOSE:
       for (var i = 0; i < this._transactions.length; ++i) {