Don't call buildFinished after we already know it failed

Dependencies

• [2] PHNLYPKB Call buildFinished when a cached build is added

Change contents

• replacement in src/lib/Hydra/Helper/PluginHooks.pm at line 17
  [2.652]→[2.652:709](∅→∅)
  − print STDERR "$plugin->buildFinished: $@\n";
  [2.652]

  [2.709]
  + print STDERR "\$plugin->buildFinished: $@\n";