Avoid a double delete of histograms in TFractionFitter (ROOT-10752) Call SetDirectory(0) for the internal histogram ( plot + MC prediction templates) managed by TFractionFitter. This avoids double-delete when deleting TFractionFitter and gDirectory and fixes ROOT-10752
Avoid a double delete of histograms in TFractionFitter (ROOT-10752)
Call SetDirectory(0) for the internal histogram ( plot + MC prediction templates) managed by TFractionFitter. This avoids double-delete when deleting TFractionFitter and gDirectory and fixes ROOT-10752

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