Bug#813426: warning: /etc/alternatives/compare is dangling; it will be updated with best choice

[jidanni1]

Package: imagemagick-6.q16
Version: 8:6.9.2.10+dfsg-2

Lots of
update-alternatives: warning: alternative /usr/bin/compare-im6 (part of link 
group compare) doesn't exist; removing from list of alternatives
update-alternatives: warning: /etc/alternatives/compare is dangling; it will be 
updated with best choice
update-alternatives: using /usr/bin/compare-im6.q16 to provide /usr/bin/compare 
(compare) in auto mode
update-alternatives: warning: alternative /usr/bin/animate-im6 (part of link 
group animate) doesn't exist; removing from list of alternatives