gimp was updated to version 2.8.16 to fix one security issue.

This security issue was fixed:
- CVE-2016-4994: Use-after-free vulnerabilities in the channel and layer properties parsing process (bsc#986021).

This non-security issues were fixed:
- Core:
* Seek much less when writing XCF
* Don't seek past the end of the file when writing XCF
* Fix velocity parameter on .GIH brushes
* Fix brokenness while transforming certain sets of linked layers
- GUI:
* Always show image tabs in single window mode
* Fix switching of dock tabs by DND hovering
* Don't make the scroll area for tags too small
* Fixed a crash in the save dialog
* Fix issue where ruler updates made things very slow on Windows
-Plug-ins:
* Fix several issues in the BMP plug-in
* Make Gfig work with the new brush size behavior again
* Fix font export in the PDF plug-in
* Support layer groups in OpenRaster files
* Fix loading of PSD files with layer groups