[iedriver] Fix closing of all tabs in Edge IE mode (SeleniumHQ#9998)

Fix the problem that it closes all tabs when using webdriver.close() to close the current tab in Edge IE Mode.

Signed-off by: jimevans <james.h.evans.jr@gmail.com>

Author: yk9772

cpp/iedriver/Browser.cpp

@@ -432,13 +432,8 @@ void Browser::Close() {
   // make any sense.
   this->SetFocusedFrameByElement(NULL);
 
-  //HRESULT hr = S_OK;
-  //if (this->is_edge_chromium_) {
-  //  hr = PostMessage(GetTopLevelWindowHandle(), WM_CLOSE, 0, 0);
-  //} else {
-  //  hr = this->browser_->Quit();
-  //}
-  HRESULT hr = this->browser_->Quit();
+  HRESULT hr = S_OK;
+  hr = this->browser_->Quit();
 
   if (FAILED(hr)) {
     LOGHR(WARN, hr) << "Call to IWebBrowser2::Quit failed";