Fix pointer sign mismatches.
Fix pointer sign mismatches.

Maluuba/crfsuite,Maluuba/crfsuite,Maluuba/crfsuite,ExpResults/partial-crfsuite,ExpResults/partial-crfsuite,ExpResults/partial-crfsuite,Maluuba/crfsuite,ExpResults/partial-crfsuite,ExpResults/partial-crfsuite,ExpResults/partial-crfsuite,Maluuba/crfsuite,Maluuba/crfsuite