coverity scan

When we make C++17 a requirement for LibreOffice at the end of 2018 the version of coverity provided by scan.coverity.com no longer worked for us. In July 2019 a newer version of the coverity tooling was available which supported C++17 and analysis resumed.

Prior to losing coverity support we had a defect density (i.e. defects per 1,000 line of code) of 0, on its return this had inflated to 0.06 due to both new defects introduced during the down period and old defects newly detected due to additional checks introduced in the new version.

Today we're finally back to 0