Bug#894360: icedtea-web (build) depends on openjdk-8

[Adrian Bunk]

Source: icedtea-web
Version: 1.6.2-3.1
Severity: serious
Tags: buster sid

openjdk-8-jdk is not expected to be part of the buster release.

icedtea-web build depends on openjdk-8 and icedtea-{netx,8-plugin}
have openjdk-8-jre dependencies.