message: Updated `storeText` so it throws an error when a variable name is not provided, fixing a bug with it where the command will hang if no variable name is provided.
diff: @@ -470,6 +470,9 @@ Selenium.prototype.doStoreEval = function() {
  };
  Selenium.prototype.doStoreText = function(locator, varName) {
  + if (!varName) {
  + throw new Error("No variable name provided.");
  + }
  let element = this.browserbot.findElement(locator);
  return browser.runtime.sendMessage({ "storeStr": bot.dom.getVisibleText(element), "storeVar": varName });
  };
  