Fix in bbox_t coords from (float) to (unsigned int)

AlexeyAB

2017-03-16 d09b987b0f2e16ac3e84e81611e2f6b1cce63c84

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val_eq (Val.add (Val.add (r3 PC) Vone) Vone) (Val.add (x2 PC) Vone)
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