[Merge] ~mitya57/compiz:fix-ftbfs into compiz:master

[Dmitry Shachnev]

The proposal to merge ~mitya57/compiz:fix-ftbfs into compiz:master has been updated.

Description changed to:

- Removed -Wno-unused-private-field flag. This warning does not exist in GCC (only in clang), and the googletest code for which it was added in bug 1095906 was removed in https://github.com/google/googletest/commit/1b89db97058ced81.

- Fixed format-truncation error by increasing the buffer size from 10 to 18.

The previous failing build log can be seen here:

https://launchpad.net/ubuntu/+archive/test-rebuild-20190906/+build/17539053

With these changes it builds fine in:

https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/3806/+packages

For more details, see:
https://code.launchpad.net/~mitya57/compiz/+git/compiz/+merge/372943
-- 
Your team Compiz Maintainers is subscribed to branch compiz:master.