Don't add empty strings to log list
Don't add empty strings to log list

Because the log is stored as an array for atomicity, appending
an empty string actually causes the record size to grow even
though it doesn't need to. This fixes that issue.

girder/girder,RafaelPalomar/girder,manthey/girder,Kitware/girder,girder/girder,manthey/girder,RafaelPalomar/girder,Kitware/girder,manthey/girder,RafaelPalomar/girder,girder/girder,Kitware/girder,Kitware/girder,RafaelPalomar/girder,girder/girder,manthey/girder,RafaelPalomar/girder