Clean up leakage in checksum hashtable.
Clean up leakage in checksum hashtable.

binondord/librsync,pauloppenheim-liveloop/librsync-winbuild,pauloppenheim-liveloop/librsync,VictorDenisov/librsync,dbaarda/librsync,pauloppenheim-liveloop/librsync-winbuild,potatogim/librsync,sourcefrog/librsync,agrandville/librsync,dbaarda/librsync,Salamek/librsync,sourcefrog/librsync,Salamek/librsync,sourcefrog/librsync,binondord/librsync,pauloppenheim-liveloop/librsync-winbuild,pauloppenheim-liveloop/librsync,librsync/librsync,binondord/librsync,VictorDenisov/librsync,VictorDenisov/librsync,potatogim/librsync,pauloppenheim-liveloop/librsync,agrandville/librsync,yrgoldteeth/librsync,sourcefrog/librsync,yrgoldteeth/librsync,yrgoldteeth/librsync,librsync/librsync,yrgoldteeth/librsync,Salamek/librsync,dbaarda/librsync,librsync/librsync,VictorDenisov/librsync,dbaarda/librsync,agrandville/librsync,librsync/librsync,potatogim/librsync