hg: jdk/sandbox: 8220555: JFR tool shows potentially misleading message when it cannot access a file

[chris.hegarty at oracle.com]

Changeset: 4985c8ca55b9
Author:    ysuenaga
Date:      2019-03-16 21:27 +0900
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/4985c8ca55b9

8220555: JFR tool shows potentially misleading message when it cannot access a file
Reviewed-by: egahlin, mseledtsov

! src/jdk.jfr/share/classes/jdk/jfr/internal/tool/Command.java
! test/jdk/jdk/jfr/tool/TestPrint.java