LArFebErrorSummaryMakerConfig: Protect against absent projectName
While working on something else I came across a DRAW_ZMUMU file containing no project name in it's metadata, leading to a failure in LArFebErrorSummaryMakerConfig.py
. This MR protect LArFebErrorSummaryMakerConfig.py
against this case.
For the record, ZMUMU_DRAW files produced with current master do have an appropriate project tag in their metadata.