hg: jdk9/dev/jdk: 8161354: policytool fails if it needs to show an error dialog before the main window appears

[weijun.wang at oracle.com]

Changeset: 600438917b1e
Author:    weijun
Date:      2016-07-14 19:31 +0800
URL:       http://hg.openjdk.java.net/jdk9/dev/jdk/rev/600438917b1e

8161354: policytool fails if it needs to show an error dialog before the main window appears
Reviewed-by: mullan

! src/jdk.policytool/share/classes/sun/security/tools/policytool/PolicyTool.java