Bug#767347: ** (evince:15136): ERROR **: Find action should be insensitive since document doesn't support find

[Mathieu Malaterre]

Package: evince
Version: 3.14.1-1

evince crash when loading a tiff file and a user click on the
magnifying glass (I was trying to zoom on the image).

Steps:

$ convert -depth 8 -size 512x512 xc:white white.tiff
$ xdg-open white.tiff
-> should start evince, if not use `evince white.tiff` directly
-> click the magnifying glass icon
** (evince:15136): ERROR **: Find action should be insensitive since
document doesn't support find

I think it would be better to report the error in a message box
instead of closing the application completely.