Minor bug fix in _make_fc function

[jscsmk]

function _make_fc gets parameters inplanes and outplanes
the conv layer inside _make_fc is followed by bn
because the input channels of bn must match with the output channels of conv layer,
parameter of bn should be changed from inplanes to outplanes
it did not cause any error because _make_fc is always used with same value of inplanes and outplanes
even so, I think it should be fixed