Fix constructor for class Dict (uninitialized member variables)
Fix constructor for class Dict (uninitialized member variables)

wildcard_unichar_id_, apostrophe_unichar_id_, question_unichar_id_ and
slash_unichar_id_ were not initialized in the constructor.

slash_unichar_id_ was used later in a conditional.

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

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