[OpenJDK 2D-Dev] RFR: 8263984: Invalidate printServices when there are no printers

[Sergey Bylokhov]

On Tue, 23 Mar 2021 13:45:33 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

> When `getAllPrinterNames()` returns null, the list of `printServices` is assigned a new empty array without invalidating old services which were in the array before.
> 
> The old print services should be invalidated.

Marked as reviewed by serb (Reviewer).

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PR: https://git.openjdk.java.net/jdk/pull/3151