Fixed the CCP opcode to charge for the length of the input

[xgreenx]

The attacker can manipulate input length and contract_len(by deploying the corresponding contract) and cause memory clear or contract and to be cheap.

We need to charge for the maximum possible value. It will incentivize the caller of the CPP to use the same length and contract_len.

Before requesting review

• [x] I have reviewed the code myself