'w(addr, ndx = 0) -> int
Leak word at ``((uint16_t*) addr)[ndx]``
Examples:
>>> import string
>>> data = string.ascii_lowercase
>>> l = MemLeak(lambda a: data[a:a+4], reraise=False)
>>> l.w(0) == unpack(\'ab\', 16)
True
>>> l.w(24) == unpack(\'yz\', 16)
True
>>> l.w(25) is None
True'

def w(self, addr, ndx=0):

    return self._b(addr, ndx, 2)
