Fix of segfault in cluster3d #498
Merged
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Description
A segfault was reported in Cluster3D in larsoft v10 testing. Traced to SnippitHit3DBuilderSBN where it was found that the move to v10 had removed the initialization of the geometry service. Restored this and also modifed the loop over TPCIDs (where the segfault was occuring since taht was the first use of the geometry service) to iterate over TPCGeo. Confirmed that it is running again.