Don't take the address of a temporary

MSVC extends the lifetime of such objects, but clang does not, and it
errors on this construct.

R=ananta@chromium.org
BUG=82385

Review URL: https://codereview.chromium.org/14141005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194997 0039d316-1c4b-4281-b951-d872f2087c98

webkit/plugins/npapi/webplugin_delegate_impl_win.cc

@@ -1024,7 +1024,8 @@ LRESULT CALLBACK WebPluginDelegateImpl::NativeWndProc(
     if (old_message != custom_msg)
       flags |= RDW_UPDATENOW;
 
-    RedrawWindow(hwnd, &invalid_rect.ToRECT(), NULL, flags);
+    RECT rect = invalid_rect.ToRECT();
+    RedrawWindow(hwnd, &rect, NULL, flags);
     result = FALSE;
   } else {
     delegate->is_calling_wndproc = true;