git: openjdk/jdk: 8306860: Avoid unnecessary allocation in List.map() when list is empty

[Vicente Romero]

Changeset: 23cbb2d1
Author:    Christoph Dreis <christoph.dreis at freenet.de>
Committer: Vicente Romero <vromero at openjdk.org>
Date:      2023-05-16 14:22:40 +0000
URL:       https://git.openjdk.org/jdk/commit/23cbb2d1709b5e7509e373d4642806d6436cbbcb

8306860: Avoid unnecessary allocation in List.map() when list is empty

Reviewed-by: vromero

! src/jdk.compiler/share/classes/com/sun/tools/javac/util/List.java