[BUG] fix WeightedEnsembleClassifier._predict_proba to work with pandas based mtypes
#4275
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fkiraly
added
module:classification
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This fixes an unreported bug where
WeightedEnsembleClassifier._predict_probawould not work withpandasmultiindex based mtypes. This is due to an array initialization that assumesX.shape[0]as axis 0 length for an array (number instances), which is not correct for the multiindex based mtype.