Fixed seg-fault that occurred if <class_id> in labels more than classes= in...

AlexeyAB

2018-05-22 60cd28bdfb410539ee582963e8f22bec4f0b7182

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