classify/adaptmatch: Fix memory leak
classify/adaptmatch: Fix memory leak

Coverity report:

CID 1340280 (#1 of 1): Resource leak (RESOURCE_LEAK)
7. leaked_storage: Variable FloatFeatures going out of scope leaks the storage it points to.

Signed-off-by: Stefan Weil <8d4c780fcfdc41841e5070f4c43da8958ba6aec0@weilnetz.de>

amitdo/tesseract,stweil/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,jbarlow83/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,stweil/tesseract,UB-Mannheim/tesseract,jbarlow83/tesseract,jbarlow83/tesseract,amitdo/tesseract,stweil/tesseract,stweil/tesseract,amitdo/tesseract,tesseract-ocr/tesseract,jbarlow83/tesseract,tesseract-ocr/tesseract,jbarlow83/tesseract,tesseract-ocr/tesseract,UB-Mannheim/tesseract,UB-Mannheim/tesseract,stweil/tesseract,amitdo/tesseract