Bug#880779: png2html build depends on removed libgd2*-dev provides

[Adrian Bunk]

Source: png2html
Version: 1.1-6
Severity: serious
Tags: buster sid

The following packages have unmet dependencies:
 builddeps:png2html : Depends: libgd2-noxpm-dev but it is not installable


Please change the build dependency to libgd-dev.