fix varname typo: ctypes.ulonglong => ctypes.c_ulonglong
fix varname typo: ctypes.ulonglong => ctypes.c_ulonglong

piranna/pyfilesystem,rivenz/pyfilesystem,pombreda/pyfilesystem,zopyx/pyfilesystem,pmitros/pyfs,flying-circus/pyfilesystem,Konubinix/pyfilesystem,pmitros/pyfs,PyFilesystem/pyfilesystem